15121020124 has 48 divisors (see below), whose sum is σ = 32033498112. Its totient is φ = 6096851712.

The previous prime is 15121020119. The next prime is 15121020137. The reversal of 15121020124 is 42102012151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1712529 + ... + 1721335.

It is an arithmetic number, because the mean of its divisors is an integer number (667364544).

Almost surely, 2^15121020124 is an apocalyptic number.

15121020124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15121020124 is an abundant number, since it is smaller than the sum of its proper divisors (16912477988).

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

15121020124 is a wasteful number, since it uses less digits than its factorization.

15121020124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12442 (or 12440 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 15121020124 its reverse (42102012151), we get a palindrome (57223032275).

The spelling of 15121020124 in words is "fifteen billion, one hundred twenty-one million, twenty thousand, one hundred twenty-four".