The Occult Significance Of 11
Aleister Crowley called 11 “the great magical number, as uniting the antithesis of 5 and 6, etc.” One of the things to which this refers is combining the five pointed microcosm pentagram and six pointed macrocosm hexagram which results in 11 points. This is why Annemarie Schimmel referred to this as “the sacred marriage between macrocosm and microcosm.”
Crowley also noted that 11 is “the general number of magick, or energy tending to change” and “11 is the number of Magick in itself. It is therefore suitable to all types of operations…it is the sacred number par excellence of the new Aeon."

In fact, writing magic as magick is done via the addition of a “k” which is the 11th letter in the English alphabet. Magic is thus viewed as stage illusionism whilst magick is thus viewed as witchcraft (Shakespeare and Milton employed that spelling). Harry Potter series author Joanne Rowling goes by J. K. Rowling with the “K.” referring not to a name but apparently, added to the name for magickal purposes (Potter’s wand is exactly 11 inches long).
Read More:  Occult Hollywood Numerology – the number 11 in movies