12113215120 has 40 divisors (see below), whose sum is σ = 28167806520. Its totient is φ = 4844497920.

The previous prime is 12113215109. The next prime is 12113215157. The reversal of 12113215120 is 2151231121.

It can be written as a sum of positive squares in 4 ways, for example, as 7054336 + 12106160784 = 2656^2 + 110028^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12113215120² (a number of 21 digits) contains 22 as substring.

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, 939276 + ... + 952084.

It is an arithmetic number, because the mean of its divisors is an integer number (704195163).

Almost surely, 2^12113215120 is an apocalyptic number.

12113215120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113215120 is an abundant number, since it is smaller than the sum of its proper divisors (16054591400).

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

12113215120 is a wasteful number, since it uses less digits than its factorization.

12113215120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24643 (or 24637 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 12113215120 its reverse (2151231121), we get a palindrome (14264446241).

The spelling of 12113215120 in words is "twelve billion, one hundred thirteen million, two hundred fifteen thousand, one hundred twenty".