123001131113021 has 32 divisors (see below), whose sum is σ = 143487054305280. Its totient is φ = 103257301225536.

The previous prime is 123001131113011. The next prime is 123001131113051. The reversal of 123001131113021 is 120311131100321.

It is a cyclic number.

It is not a de Polignac number, because 123001131113021 - 2¹⁸ = 123001130850877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123001131112984 and 123001131113002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001131113011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400023080 + ... + 400330446.

It is an arithmetic number, because the mean of its divisors is an integer number (4483970447040).

Almost surely, 2^{123001131113021} is an apocalyptic number.

It is an amenable number.

123001131113021 is a deficient number, since it is larger than the sum of its proper divisors (20485923192259).

123001131113021 is a wasteful number, since it uses less digits than its factorization.

123001131113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311033.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 123001131113021 its reverse (120311131100321), we get a palindrome (243312262213342).

The spelling of 123001131113021 in words is "one hundred twenty-three trillion, one billion, one hundred thirty-one million, one hundred thirteen thousand, twenty-one".