11513021120 has 56 divisors (see below), whose sum is σ = 28858311600. Its totient is φ = 4362826752.

The previous prime is 11513021119. The next prime is 11513021131. The reversal of 11513021120 is 2112031511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940715 + ... + 952874.

Almost surely, 2^11513021120 is an apocalyptic number.

11513021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11513021120 is an abundant number, since it is smaller than the sum of its proper divisors (17345290480).

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

11513021120 is a wasteful number, since it uses less digits than its factorization.

11513021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893625 (or 1893615 counting only the distinct ones).

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

Adding to 11513021120 its reverse (2112031511), we get a palindrome (13625052631).

The spelling of 11513021120 in words is "eleven billion, five hundred thirteen million, twenty-one thousand, one hundred twenty".