122215379 has 16 divisors (see below), whose sum is σ = 143898720. Its totient is φ = 102332160.

The previous prime is 122215351. The next prime is 122215381. The reversal of 122215379 is 973512221.

It is a cyclic number.

It is not a de Polignac number, because 122215379 - 2¹⁶ = 122149843 is a prime.

It is a super-2 number, since 2×122215379² = 29873197728227282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122215319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107687 + ... + 108815.

It is an arithmetic number, because the mean of its divisors is an integer number (8993670).

Almost surely, 2^122215379 is an apocalyptic number.

122215379 is a deficient number, since it is larger than the sum of its proper divisors (21683341).

122215379 is a wasteful number, since it uses less digits than its factorization.

122215379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910.

The product of its digits is 7560, while the sum is 32.

The square root of 122215379 is about 11055.1064671490. The cubic root of 122215379 is about 496.2592554536.

The spelling of 122215379 in words is "one hundred twenty-two million, two hundred fifteen thousand, three hundred seventy-nine".