15113121020 has 12 divisors (see below), whose sum is σ = 31737554184. Its totient is φ = 6045248400.

The previous prime is 15113121019. The next prime is 15113121041. The reversal of 15113121020 is 2012131151.

It is a self number, because there is not a number n which added to its sum of digits gives 15113121020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377828006 + ... + 377828045.

It is an arithmetic number, because the mean of its divisors is an integer number (2644796182).

Almost surely, 2^15113121020 is an apocalyptic number.

15113121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15113121020 is an abundant number, since it is smaller than the sum of its proper divisors (16624433164).

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

15113121020 is a wasteful number, since it uses less digits than its factorization.

15113121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755656060 (or 755656058 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 15113121020 its reverse (2012131151), we get a palindrome (17125252171).

The spelling of 15113121020 in words is "fifteen billion, one hundred thirteen million, one hundred twenty-one thousand, twenty".