121615023 has 16 divisors (see below), whose sum is σ = 164488320. Its totient is φ = 79917216.

The previous prime is 121615001. The next prime is 121615031. The reversal of 121615023 is 320516121.

It is not a de Polignac number, because 121615023 - 2²⁵ = 88060591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121615033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72033 + ... + 73701.

It is an arithmetic number, because the mean of its divisors is an integer number (10280520).

Almost surely, 2^121615023 is an apocalyptic number.

121615023 is a deficient number, since it is larger than the sum of its proper divisors (42873297).

121615023 is a wasteful number, since it uses less digits than its factorization.

121615023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121615023 is about 11027.9201574912. The cubic root of 121615023 is about 495.4453333385.

The spelling of 121615023 in words is "one hundred twenty-one million, six hundred fifteen thousand, twenty-three".