Billiogender

Billiogender is a multigender and subset of mathgender in which one feels as though they have, experience, or encompass a billion genders. It may also be considered a subset to pangender.

Similar terms include centilliogender, milliogender, kilogender, platilligender, trilligender, and zilliogender.

History
Billiogender was coined on July 31, 2018 by Tumblr user Arco-Plurish.

Flag
There are 9 individual sections on the flag to represent the 9 zeroes in a written billion, and the pi symbol represents the seemingly unending complexity and vastness of billiogender. The colors' meanings are unknown.