|Cardinal||two hundred twenty-two|
(two hundred twenty-second)
|Factorization||2 × 3 × 37|
It is a decimal repdigit and a strobogrammatic number (meaning that it looks the same turned upside down on a calculator display). It is one of the numbers whose digit sum in decimal is the same as it is in binary.
There are exactly 222 distinct ways of assigning a meet and join operation to a set of ten unlabeled elements in order to give them the structure of a lattice, and exactly 222 different six-edge polysticks.