12131133220 has 24 divisors (see below), whose sum is σ = 25479929664. Its totient is φ = 4851586656.

The previous prime is 12131133169. The next prime is 12131133229. The reversal of 12131133220 is 2233113121.

It is a super-3 number, since 3×12131133220³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12131133229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67257 + ... + 169663.

It is an arithmetic number, because the mean of its divisors is an integer number (1061663736).

Almost surely, 2^12131133220 is an apocalyptic number.

12131133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131133220 is an abundant number, since it is smaller than the sum of its proper divisors (13348796444).

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

12131133220 is a wasteful number, since it uses less digits than its factorization.

12131133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108339 (or 108337 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12131133220 its reverse (2233113121), we get a palindrome (14364246341).

The spelling of 12131133220 in words is "twelve billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty".