121015912423 has 8 divisors (see below), whose sum is σ = 138337673600. Its totient is φ = 103702594680.

The previous prime is 121015912357. The next prime is 121015912487. The reversal of 121015912423 is 324219510121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121015912423 - 2²¹ = 121013815271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121015912723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2080113 + ... + 2137498.

It is an arithmetic number, because the mean of its divisors is an integer number (17292209200).

Almost surely, 2^121015912423 is an apocalyptic number.

121015912423 is a deficient number, since it is larger than the sum of its proper divisors (17321761177).

121015912423 is an equidigital number, since it uses as much as digits as its factorization.

121015912423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221717.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 121015912423 in words is "one hundred twenty-one billion, fifteen million, nine hundred twelve thousand, four hundred twenty-three".