123201320010121 has 4 divisors (see below), whose sum is σ = 123216509430144. Its totient is φ = 123186130590100.

The previous prime is 123201320010113. The next prime is 123201320010173. The reversal of 123201320010121 is 121010023102321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123201320010121 - 2³ = 123201320010113 is a prime.

It is a super-2 number, since 2×123201320010121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123201320014121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7594697845 + ... + 7594714066.

It is an arithmetic number, because the mean of its divisors is an integer number (30804127357536).

Almost surely, 2^{123201320010121} is an apocalyptic number.

It is an amenable number.

123201320010121 is a deficient number, since it is larger than the sum of its proper divisors (15189420023).

123201320010121 is an equidigital number, since it uses as much as digits as its factorization.

123201320010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15189420022.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123201320010121 its reverse (121010023102321), we get a palindrome (244211343112442).

The spelling of 123201320010121 in words is "one hundred twenty-three trillion, two hundred one billion, three hundred twenty million, ten thousand, one hundred twenty-one".