15121334412 has 72 divisors (see below), whose sum is σ = 38576669040. Its totient is φ = 4994075520.

The previous prime is 15121334407. The next prime is 15121334413. The reversal of 15121334412 is 21443312151.

15121334412 is a `hidden beast` number, since 1 + 5 + 1 + 213 + 3 + 441 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (15121334413) 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 23 ways as a sum of consecutive naturals, for example, 1735138 + ... + 1743830.

It is an arithmetic number, because the mean of its divisors is an integer number (535787070).

Almost surely, 2^15121334412 is an apocalyptic number.

15121334412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15121334412 is an abundant number, since it is smaller than the sum of its proper divisors (23455334628).

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

15121334412 is a wasteful number, since it uses less digits than its factorization.

15121334412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143 (or 9138 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 15121334412 its reverse (21443312151), we get a palindrome (36564646563).

The spelling of 15121334412 in words is "fifteen billion, one hundred twenty-one million, three hundred thirty-four thousand, four hundred twelve".