15121211012232 has 64 divisors (see below), whose sum is σ = 40711901287680. Its totient is φ = 4652571904512.

The previous prime is 15121211012231. The next prime is 15121211012263. The reversal of 15121211012232 is 23221011212151.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (15121211012231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13400068 + ... + 14484620.

It is an arithmetic number, because the mean of its divisors is an integer number (636123457620).

Almost surely, 2^{15121211012232} is an apocalyptic number.

15121211012232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15121211012232 is an abundant number, since it is smaller than the sum of its proper divisors (25590690275448).

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

15121211012232 is a wasteful number, since it uses less digits than its factorization.

15121211012232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129262 (or 1129258 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 15121211012232 its reverse (23221011212151), we get a palindrome (38342222224383).

The spelling of 15121211012232 in words is "fifteen trillion, one hundred twenty-one billion, two hundred eleven million, twelve thousand, two hundred thirty-two".