1122 (number and year)

Overview of 1122 as an integer and as the calendar year AD 1122: numeric properties, mathematical divisors, and the key historical event—the Concordat of Worms—that marked its place in medieval history.

1122 can refer either to the natural number that follows 1121 and precedes 1123, or to the year AD 1122 in the early 12th century. As a concise label it appears in mathematics, chronology and everyday numbering. The two senses are related only by coincidence; the numeric properties of 1122 are fixed, while the historical year carries the political and cultural events of its time.

Mathematical characteristics

As an integer, 1122 is even and composite. Its prime factorization is 2 × 3 × 11 × 17. From those factors it has 16 positive divisors in total. The number's sum of proper divisors exceeds 1122, which classifies it as an abundant number. In Roman numerals 1122 is written MCXXII.

Prime factors: 2, 3, 11, 17
Number of positive divisors: 16
Type: even, composite, abundant

Year AD 1122: historical overview

The year 1122 is best known for a major settlement in Western Christendom, the Concordat of Worms, which addressed the long-running Investiture Controversy between secular rulers and the papacy. Reached in 1122, this agreement between Pope Callixtus II and Holy Roman Emperor Henry V established important precedents about the appointment of bishops and the boundaries of ecclesiastical and imperial authority.

Although the Concordat of Worms did not end all tensions between church and state, it marked a turning point: it distinguished spiritual investiture, which became the church's prerogative, from certain temporal rights and honors that could involve rulers. The settlement influenced the development of medieval political theory and the balance of power in Europe during the 12th century.

Context and legacy

Beyond the Concordat, the early 1120s belong to a period of consolidation for many medieval states, the growth of monastic and ecclesiastical institutions, and the ongoing effects of the First Crusade (late 11th and early 12th centuries) on Mediterranean and Near Eastern politics. The arrangements achieved in 1122 are often cited in studies of medieval law, church reform and the gradual formation of more clearly delineated secular and religious spheres of authority.

In modern usage the numeral 1122 appears in lists, identifiers, model numbers and dates. As with other ordinary integers it functions as a practical label in indexing, addressing and technical nomenclature; its historical resonance depends on whether one is recalling the year AD 1122 and the Concordat of Worms.