131202222131421 has 56 divisors (see below), whose sum is σ = 229403318676800. Its totient is φ = 74972698217928.

The previous prime is 131202222131359. The next prime is 131202222131447. The reversal of 131202222131421 is 124131222202131.

131202222131421 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 2 + 22 + 213 + 1 + 421 = 666.

It is not a de Polignac number, because 131202222131421 - 2⁹ = 131202222130909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202222139421) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 262105075 + ... + 262605168.

Almost surely, 2^{131202222131421} is an apocalyptic number.

It is an amenable number.

131202222131421 is a deficient number, since it is larger than the sum of its proper divisors (98201096545379).

131202222131421 is an frugal number, since it uses more digits than its factorization.

131202222131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524710282 (or 524710253 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131202222131421 its reverse (124131222202131), we get a palindrome (255333444333552).

The spelling of 131202222131421 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty-one".