122557117321 has 4 divisors (see below), whose sum is σ = 122567247252. Its totient is φ = 122546987392.

The previous prime is 122557117301. The next prime is 122557117367. The reversal of 122557117321 is 123711755221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123711755221 = 61 ⋅2028061561.

It can be written as a sum of positive squares in 2 ways, for example, as 16069111696 + 106488005625 = 126764^2 + 326325^2 .

It is a cyclic number.

It is not a de Polignac number, because 122557117321 - 2²⁹ = 122020246409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122557117301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5046796 + ... + 5071021.

It is an arithmetic number, because the mean of its divisors is an integer number (30641811813).

Almost surely, 2^122557117321 is an apocalyptic number.

It is an amenable number.

122557117321 is a deficient number, since it is larger than the sum of its proper divisors (10129931).

122557117321 is a wasteful number, since it uses less digits than its factorization.

122557117321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129930.

The product of its digits is 29400, while the sum is 37.

The spelling of 122557117321 in words is "one hundred twenty-two billion, five hundred fifty-seven million, one hundred seventeen thousand, three hundred twenty-one".