121622915 has 16 divisors (see below), whose sum is σ = 148512000. Its totient is φ = 95604192.

The previous prime is 121622909. The next prime is 121622953. The reversal of 121622915 is 519226121.

It is a cyclic number.

It is not a de Polignac number, because 121622915 - 2²² = 117428611 is a prime.

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, 70736 + ... + 72434.

It is an arithmetic number, because the mean of its divisors is an integer number (9282000).

Almost surely, 2^121622915 is an apocalyptic number.

121622915 is a deficient number, since it is larger than the sum of its proper divisors (26889085).

121622915 is a wasteful number, since it uses less digits than its factorization.

121622915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its digits is 2160, while the sum is 29.

The square root of 121622915 is about 11028.2779707441. The cubic root of 121622915 is about 495.4560501341.

The spelling of 121622915 in words is "one hundred twenty-one million, six hundred twenty-two thousand, nine hundred fifteen".