12215501504 has 28 divisors (see below), whose sum is σ = 25666028424. Its totient is φ = 5748470784.

The previous prime is 12215501497. The next prime is 12215501509. The reversal of 12215501504 is 40510551221.

It is not an unprimeable number, because it can be changed into a prime (12215501509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5612654 + ... + 5614829.

Almost surely, 2^12215501504 is an apocalyptic number.

It is an amenable number.

12215501504 is an abundant number, since it is smaller than the sum of its proper divisors (13450526920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215501504 is a wasteful number, since it uses less digits than its factorization.

12215501504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227512 (or 11227502 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 12215501504 in words is "twelve billion, two hundred fifteen million, five hundred one thousand, five hundred four".