131221033132 has 36 divisors (see below), whose sum is σ = 269882473224. Its totient is φ = 55657808640.

The previous prime is 131221033109. The next prime is 131221033147. The reversal of 131221033132 is 231330122131.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3431994 + ... + 3470017.

Almost surely, 2^131221033132 is an apocalyptic number.

It is an amenable number.

131221033132 is an abundant number, since it is smaller than the sum of its proper divisors (138661440092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131221033132 is a wasteful number, since it uses less digits than its factorization.

131221033132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902126 (or 6902117 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131221033132 its reverse (231330122131), we get a palindrome (362551155263).

The spelling of 131221033132 in words is "one hundred thirty-one billion, two hundred twenty-one million, thirty-three thousand, one hundred thirty-two".