22 is a significant symbolic number particularly in the Hebrew tradition. There are:
22 letters of the Hebrew Alphabet
22 higher Stages of initiation in the Sephiroth
22 Tarot cards
22 spokes of the Bible Wheel.
Although the numbers are different the idea of letters of the alphabet and the wheel as symbolic elements are found also in India and elsewhere.
The world has 22 divisions (the 22 nomes of Egypt related to the three planes (mental, astral and physical) with their seven subdivisions and their source of origin. (3 x 7 = 21, + 1(source) = 22.).
22 x 3 = 66