123044220054121 has 4 divisors (see below), whose sum is σ = 123724022375044. Its totient is φ = 122364417733200.

The previous prime is 123044220054109. The next prime is 123044220054127. The reversal of 123044220054121 is 121450022440321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13628205889600 + 109416014164521 = 3691640^2 + 10460211^2 .

It is a cyclic number.

It is not a de Polignac number, because 123044220054121 - 2¹⁷ = 123044219923049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123044220054127) 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, 339901160190 + ... + 339901160551.

It is an arithmetic number, because the mean of its divisors is an integer number (30931005593761).

Almost surely, 2^{123044220054121} is an apocalyptic number.

It is an amenable number.

123044220054121 is a deficient number, since it is larger than the sum of its proper divisors (679802320923).

123044220054121 is an equidigital number, since it uses as much as digits as its factorization.

123044220054121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679802320922.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 123044220054121 its reverse (121450022440321), we get a palindrome (244494242494442).

The spelling of 123044220054121 in words is "one hundred twenty-three trillion, forty-four billion, two hundred twenty million, fifty-four thousand, one hundred twenty-one".