12131221120304 has 40 divisors (see below), whose sum is σ = 27613373953872. Its totient is φ = 5090022846720.

The previous prime is 12131221120303. The next prime is 12131221120357. The reversal of 12131221120304 is 40302112213121.

It is a self number, because there is not a number n which added to its sum of digits gives 12131221120304.

It is not an unprimeable number, because it can be changed into a prime (12131221120303) 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 7 ways as a sum of consecutive naturals, for example, 2651051279 + ... + 2651055854.

Almost surely, 2^{12131221120304} is an apocalyptic number.

It is an amenable number.

12131221120304 is an abundant number, since it is smaller than the sum of its proper divisors (15482152833568).

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

12131221120304 is a wasteful number, since it uses less digits than its factorization.

12131221120304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302107165 (or 5302107159 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12131221120304 its reverse (40302112213121), we get a palindrome (52433333333425).

The spelling of 12131221120304 in words is "twelve trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred twenty thousand, three hundred four".