Fatto generale: 21737 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21737 is an unremarkable number.
Trivia: 21737 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: July 6th is the day in 1751 that Pope Benedict XIV suppresses the Patriarchate of Aquileia and establishes from its territory the Archdiocese of Udine and Gorizia.