Fatto generale: 13216 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 13216 is a boring number.
Trivia: 13216 is an unremarkable number.
Data storica: March 7th is the day in 1799 that Napoleon Bonaparte captures Jaffa in Palestine and his troops proceed to kill more than 2,000 Albanian captives.