12132011220 has 48 divisors (see below), whose sum is σ = 38822437248. Its totient is φ = 2773031040.

The previous prime is 12132011191. The next prime is 12132011261. The reversal of 12132011220 is 2211023121.

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 12132011220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14442451 + ... + 14443290.

It is an arithmetic number, because the mean of its divisors is an integer number (808800776).

Almost surely, 2^12132011220 is an apocalyptic number.

12132011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132011220 is an abundant number, since it is smaller than the sum of its proper divisors (26690426028).

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

12132011220 is a wasteful number, since it uses less digits than its factorization.

12132011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28885760 (or 28885758 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12132011220 its reverse (2211023121), we get a palindrome (14343034341).

The spelling of 12132011220 in words is "twelve billion, one hundred thirty-two million, eleven thousand, two hundred twenty".