122312255111221 has 64 divisors (see below), whose sum is σ = 146468304322560. Its totient is φ = 99941193031680.

The previous prime is 122312255111203. The next prime is 122312255111251. The reversal of 122312255111221 is 122111552213221.

It is not a de Polignac number, because 122312255111221 - 2²³ = 122312246722613 is a prime.

It is a super-2 number, since 2×122312255111221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122312255111251) 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, 6096399036 + ... + 6096419098.

It is an arithmetic number, because the mean of its divisors is an integer number (2288567255040).

Almost surely, 2^{122312255111221} is an apocalyptic number.

It is an amenable number.

122312255111221 is a deficient number, since it is larger than the sum of its proper divisors (24156049211339).

122312255111221 is a wasteful number, since it uses less digits than its factorization.

122312255111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21794.

The product of its digits is 4800, while the sum is 31.

The spelling of 122312255111221 in words is "one hundred twenty-two trillion, three hundred twelve billion, two hundred fifty-five million, one hundred eleven thousand, two hundred twenty-one".