Yes 11:11 is pretty cool. I now see 12:12. Check out this webpage...http://www.crystalinks.com/12strandna.html
At the bottom it also explains 11:11 more in depth. I want to learn more about Sacred Geometry.
There´s also pyramid math....
11 x 11=121
111 x 111= 12321
1111 x 1111 = 1234321
Neat huh?