Fatto generale: 2266 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2266 is a dodecagonal pyramidal number.
Trivia: 2266 is a boring number.
Data storica: March 15th is the day in 1514 that Jodocus Badius Ascensius publishes Christiern Pedersen's Latin version of Saxo’s Gesta Danorum, the oldest known version of that work.