12131752220 has 48 divisors (see below), whose sum is σ = 29710430400. Its totient is φ = 4159455552.

The previous prime is 12131752183. The next prime is 12131752249. The reversal of 12131752220 is 2225713121.

It is a self number, because there is not a number n which added to its sum of digits gives 12131752220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877379 + ... + 891098.

It is an arithmetic number, because the mean of its divisors is an integer number (618967300).

Almost surely, 2^12131752220 is an apocalyptic number.

12131752220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131752220 is an abundant number, since it is smaller than the sum of its proper divisors (17578678180).

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

12131752220 is a wasteful number, since it uses less digits than its factorization.

12131752220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768507 (or 1768491 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 12131752220 in words is "twelve billion, one hundred thirty-one million, seven hundred fifty-two thousand, two hundred twenty".