131212502215204 has 12 divisors (see below), whose sum is σ = 229628626150924. Its totient is φ = 65604323314944.

The previous prime is 131212502215153. The next prime is 131212502215253. The reversal of 131212502215204 is 402512205212131.

It can be written as a sum of positive squares in 2 ways, for example, as 91237838422500 + 39974663792704 = 9551850^2 + 6322552^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481795017 + ... + 482067280.

Almost surely, 2^{131212502215204} is an apocalyptic number.

It is an amenable number.

131212502215204 is a deficient number, since it is larger than the sum of its proper divisors (98416123935720).

131212502215204 is a wasteful number, since it uses less digits than its factorization.

131212502215204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963896334 (or 963896332 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 131212502215204 its reverse (402512205212131), we get a palindrome (533724707427335).

The spelling of 131212502215204 in words is "one hundred thirty-one trillion, two hundred twelve billion, five hundred two million, two hundred fifteen thousand, two hundred four".