131045253520221 has 24 divisors (see below), whose sum is σ = 191202938035200. Its totient is φ = 86482558987776.

The previous prime is 131045253520219. The next prime is 131045253520241. The reversal of 131045253520221 is 122025352540131.

131045253520221 is a `hidden beast` number, since 1 + 3 + 10 + 4 + 52 + 53 + 520 + 2 + 21 = 666.

It is not a de Polignac number, because 131045253520221 - 2¹ = 131045253520219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131045253520241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127159695 + ... + 128186108.

It is an arithmetic number, because the mean of its divisors is an integer number (7966789084800).

Almost surely, 2^{131045253520221} is an apocalyptic number.

It is an amenable number.

131045253520221 is a deficient number, since it is larger than the sum of its proper divisors (60157684514979).

131045253520221 is a wasteful number, since it uses less digits than its factorization.

131045253520221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255346385 (or 255346382 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 131045253520221 in words is "one hundred thirty-one trillion, forty-five billion, two hundred fifty-three million, five hundred twenty thousand, two hundred twenty-one".