Fait général: 21916 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 21916 is an uninteresting number.
Culture générale: 21916 is a boring number.
Date historique: January 1st is the day in 1988 that the Evangelical Lutheran Church in America comes into existence, creating the largest Lutheran denomination in the United States.