22(n = noun.quantity) twenty-two, xxii - the cardinal number that is the sum of twenty-one and one;
is a kind of large integer

   22(s = adj.all) twenty-two, xxii - being two more than twenty;

   one more than twenty-one; denoting a quantity consisting of twenty-two items or units; -- representing the number twenty-two as Arabic numerals [WordNet 1.5]

atomic number 22, february 22