123301400305121 has 4 divisors (see below), whose sum is σ = 123302113231812. Its totient is φ = 123300687378432.

The previous prime is 123301400305099. The next prime is 123301400305243. The reversal of 123301400305121 is 121503004103321.

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 113160767667025 + 10140632638096 = 10637705^2 + 3184436^2 .

It is a cyclic number.

It is not a de Polignac number, because 123301400305121 - 2²² = 123301396110817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123301400325121) 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, 356203856 + ... + 356549841.

It is an arithmetic number, because the mean of its divisors is an integer number (30825528307953).

Almost surely, 2^{123301400305121} is an apocalyptic number.

It is an amenable number.

123301400305121 is a deficient number, since it is larger than the sum of its proper divisors (712926691).

123301400305121 is an equidigital number, since it uses as much as digits as its factorization.

123301400305121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712926690.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 123301400305121 its reverse (121503004103321), we get a palindrome (244804404408442).

The spelling of 123301400305121 in words is "one hundred twenty-three trillion, three hundred one billion, four hundred million, three hundred five thousand, one hundred twenty-one".