15121310412 has 48 divisors (see below), whose sum is σ = 38009925632. Its totient is φ = 4651145280.

The previous prime is 15121310389. The next prime is 15121310419. The reversal of 15121310412 is 21401312151.

It is not an unprimeable number, because it can be changed into a prime (15121310419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501237 + ... + 530547.

Almost surely, 2^15121310412 is an apocalyptic number.

15121310412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15121310412 is an abundant number, since it is smaller than the sum of its proper divisors (22888615220).

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

15121310412 is a wasteful number, since it uses less digits than its factorization.

15121310412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32638 (or 32636 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 15121310412 its reverse (21401312151), we get a palindrome (36522622563).

The spelling of 15121310412 in words is "fifteen billion, one hundred twenty-one million, three hundred ten thousand, four hundred twelve".