12013032120 has 64 divisors (see below), whose sum is σ = 36877230720. Its totient is φ = 3128974464.

The previous prime is 12013032113. The next prime is 12013032127. The reversal of 12013032120 is 2123031021.

It is an interprime number because it is at equal distance from previous prime (12013032113) and next prime (12013032127).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12013032120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013032127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158894 + ... + 1169213.

It is an arithmetic number, because the mean of its divisors is an integer number (576206730).

Almost surely, 2^12013032120 is an apocalyptic number.

12013032120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013032120 is an abundant number, since it is smaller than the sum of its proper divisors (24864198600).

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

12013032120 is a wasteful number, since it uses less digits than its factorization.

12013032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328164 (or 2328160 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12013032120 its reverse (2123031021), we get a palindrome (14136063141).

The spelling of 12013032120 in words is "twelve billion, thirteen million, thirty-two thousand, one hundred twenty".