1227

1227, written MCCXXVII in Roman numerals, is a natural number and a year in the 13th century. In mathematics, 1227 is composite, with prime factorization 3 × 409. It is not a square or a cube and is classified as a semiprime because it is the product of two primes.

In historical context, 1227 is most often noted for events in the Mongol Empire. According to many sources, Genghis Khan died in 1227 during the Mongol campaign against the Western Xia dynasty in what is now northwestern China. His death marked a succession moment for the empire, with leadership passing to his sons and eventually enabling further Mongol expansion under Ogedei Khan. The campaign against Western Xia led to the weakening and eventual dissolution of that dynasty in the years surrounding 1227, contributing to the broader consolidation of Mongol power across Central Asia and beyond.

Other global developments in 1227 are less well documented in broad overviews and vary by region. While the exact dates and local ramifications differ, the year is generally associated with ongoing Mongol military activity and shifts in leadership that would influence subsequent conquests and state formation in Asia.

Overall, 1227 is remembered primarily for the death of a pivotal figure in world history and for the continuing expansion of the Mongol Empire, alongside its occasional significance in regional medieval histories.