131211122221320 has 64 divisors (see below), whose sum is σ = 397116847825920. Its totient is φ = 34679989822464.

The previous prime is 131211122221307. The next prime is 131211122221427. The reversal of 131211122221320 is 23122221112131.

131211122221320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4838154664 + ... + 4838181783.

It is an arithmetic number, because the mean of its divisors is an integer number (6204950747280).

Almost surely, 2^{131211122221320} is an apocalyptic number.

131211122221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131211122221320 is an abundant number, since it is smaller than the sum of its proper divisors (265905725604600).

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

131211122221320 is a wasteful number, since it uses less digits than its factorization.

131211122221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9676336574 (or 9676336570 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 131211122221320 its reverse (23122221112131), we get a palindrome (154333343333451).

The spelling of 131211122221320 in words is "one hundred thirty-one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, three hundred twenty".