131202212121242 has 8 divisors (see below), whose sum is σ = 196825833174132. Its totient is φ = 65593601063200.

The previous prime is 131202212121229. The next prime is 131202212121263. The reversal of 131202212121242 is 242121212202131.

It can be written as a sum of positive squares in 2 ways, for example, as 131175584082481 + 26628038761 = 11453191^2 + 163181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3752476859 + ... + 3752511822.

Almost surely, 2^{131202212121242} is an apocalyptic number.

131202212121242 is a deficient number, since it is larger than the sum of its proper divisors (65623621052890).

131202212121242 is an equidigital number, since it uses as much as digits as its factorization.

131202212121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504997424.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 131202212121242 its reverse (242121212202131), we get a palindrome (373323424323373).

The spelling of 131202212121242 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred twelve million, one hundred twenty-one thousand, two hundred forty-two".