12421252433156 has 24 divisors (see below), whose sum is σ = 24843378831936. Its totient is φ = 5323206621600.

The previous prime is 12421252433147. The next prime is 12421252433167. The reversal of 12421252433156 is 65133425212421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6991670 + ... + 8586381.

It is an arithmetic number, because the mean of its divisors is an integer number (1035140784664).

Almost surely, 2^{12421252433156} is an apocalyptic number.

It is an amenable number.

12421252433156 is an abundant number, since it is smaller than the sum of its proper divisors (12422126398780).

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

12421252433156 is a wasteful number, since it uses less digits than its factorization.

12421252433156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606539 (or 15606537 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

Adding to 12421252433156 its reverse (65133425212421), we get a palindrome (77554677645577).

The spelling of 12421252433156 in words is "twelve trillion, four hundred twenty-one billion, two hundred fifty-two million, four hundred thirty-three thousand, one hundred fifty-six".