12146481522 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 648 + 1 + 5 + 2 + 2 = 666.
It is an ABA number since it can be written as A⋅BA, here for A=2, B=77931.
It is an unprimeable number.
Almost surely, 212146481522 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12146481522
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12146481522 is an frugal number, since it uses more digits than its factorization.
12146481522 is an evil number, because the sum of its binary digits is even.
The spelling of 12146481522 in words is "twelve billion, one hundred forty-six million, four hundred eighty-one thousand, five hundred twenty-two".