A thought popped into my head on Christmas Eve, that 11:11 meant Ephraim and Manasseh! So I looked up Genesis 49 and sure enough the tribe of Joseph is the eleventh tribe listed. Also the verse describing Joseph is verse 22. Now I think the numbers have many meanings, but I have felt they were a message to the receivers that they were descendants of the lost tribes of Israel. This may lend further credence to that theory.
Following that reasoning one would have;
Zebulun is 555
Issachar is 666
Dan is 777
Gad is 888
Asher is 999
Naphtali is 10:10
Joseph is 11:11 (Ephraim and Manasseh)
Benjamin is 12:12
I don't know what it means if anything, but I sure thought it was an interesting idea!