131212011400402 has 16 divisors (see below), whose sum is σ = 197205984189720. Its totient is φ = 65476685026048.

The previous prime is 131212011400343. The next prime is 131212011400427. The reversal of 131212011400402 is 204004110212131.

It can be written as a sum of positive squares in 4 ways, for example, as 128514169015281 + 2697842385121 = 11336409^2 + 1642511^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203519418 + ... + 204163114.

Almost surely, 2^{131212011400402} is an apocalyptic number.

131212011400402 is a deficient number, since it is larger than the sum of its proper divisors (65993972789318).

131212011400402 is a wasteful number, since it uses less digits than its factorization.

131212011400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844445.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 131212011400402 its reverse (204004110212131), we get a palindrome (335216121612533).

The spelling of 131212011400402 in words is "one hundred thirty-one trillion, two hundred twelve billion, eleven million, four hundred thousand, four hundred two".