131221332111210 has 128 divisors (see below), whose sum is σ = 361650057431040. Its totient is φ = 30136408531200.

The previous prime is 131221332111173. The next prime is 131221332111211. The reversal of 131221332111210 is 12111233122131.

It is not an unprimeable number, because it can be changed into a prime (131221332111211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 417757315 + ... + 418071305.

It is an arithmetic number, because the mean of its divisors is an integer number (2825391073680).

Almost surely, 2^{131221332111210} is an apocalyptic number.

131221332111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131221332111210 is an abundant number, since it is smaller than the sum of its proper divisors (230428725319830).

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

131221332111210 is a wasteful number, since it uses less digits than its factorization.

131221332111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380684.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 131221332111210 its reverse (12111233122131), we get a palindrome (143332565233341).

The spelling of 131221332111210 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, two hundred ten".