123013200525101 has 4 divisors (see below), whose sum is σ = 126337881620412. Its totient is φ = 119688519429792.

The previous prime is 123013200525079. The next prime is 123013200525119. The reversal of 123013200525101 is 101525002310321.

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 59649594589225 + 63363605935876 = 7723315^2 + 7960126^2 .

It is a cyclic number.

It is not a de Polignac number, because 123013200525101 - 2²² = 123013196330797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013200525301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662340547600 + ... + 1662340547673.

It is an arithmetic number, because the mean of its divisors is an integer number (31584470405103).

Almost surely, 2^{123013200525101} is an apocalyptic number.

It is an amenable number.

123013200525101 is a deficient number, since it is larger than the sum of its proper divisors (3324681095311).

123013200525101 is an equidigital number, since it uses as much as digits as its factorization.

123013200525101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324681095310.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 123013200525101 its reverse (101525002310321), we get a palindrome (224538202835422).

The spelling of 123013200525101 in words is "one hundred twenty-three trillion, thirteen billion, two hundred million, five hundred twenty-five thousand, one hundred one".