123021120132103 has 4 divisors (see below), whose sum is σ = 130257656610480. Its totient is φ = 115784583653728.

The previous prime is 123021120132091. The next prime is 123021120132107. The reversal of 123021120132103 is 301231021120321.

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

It is a de Polignac number, because none of the positive numbers 2^k-123021120132103 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 (123021120132107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618268239163 + ... + 3618268239196.

It is an arithmetic number, because the mean of its divisors is an integer number (32564414152620).

Almost surely, 2^{123021120132103} is an apocalyptic number.

123021120132103 is a deficient number, since it is larger than the sum of its proper divisors (7236536478377).

123021120132103 is an equidigital number, since it uses as much as digits as its factorization.

123021120132103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236536478376.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 123021120132103 its reverse (301231021120321), we get a palindrome (424252141252424).

The spelling of 123021120132103 in words is "one hundred twenty-three trillion, twenty-one billion, one hundred twenty million, one hundred thirty-two thousand, one hundred three".