123031253504121 has 16 divisors (see below), whose sum is σ = 164236591668864. Its totient is φ = 81923379594624.

The previous prime is 123031253504077. The next prime is 123031253504191. The reversal of 123031253504121 is 121405352130321.

It is a happy number.

It is not a de Polignac number, because 123031253504121 - 2²¹ = 123031251406969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123031253504191) 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, 126024951 + ... + 126997443.

It is an arithmetic number, because the mean of its divisors is an integer number (10264786979304).

Almost surely, 2^{123031253504121} is an apocalyptic number.

It is an amenable number.

123031253504121 is a deficient number, since it is larger than the sum of its proper divisors (41205338164743).

123031253504121 is an equidigital number, since it uses as much as digits as its factorization.

123031253504121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022560.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 123031253504121 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred fifty-three million, five hundred four thousand, one hundred twenty-one".