General fact: 21872 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 21872 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 21872 is an uninteresting number.
Historical date: November 18th is the day in 1904 that General Esteban Huertas steps down after the government of Panama fears he wants to stage a coup.