131222421790768 has 160 divisors (see below), whose sum is σ = 320542175416320. Its totient is φ = 50552394036480.

The previous prime is 131222421790661. The next prime is 131222421790777. The reversal of 131222421790768 is 867097124222131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82839871 + ... + 84409057.

It is an arithmetic number, because the mean of its divisors is an integer number (2003388596352).

Almost surely, 2^{131222421790768} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131222421790768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160271087708160).

131222421790768 is an abundant number, since it is smaller than the sum of its proper divisors (189319753625552).

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

131222421790768 is a wasteful number, since it uses less digits than its factorization.

131222421790768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569975 (or 1569969 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 131222421790768 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, four hundred twenty-one million, seven hundred ninety thousand, seven hundred sixty-eight".