123103033023021 has 4 divisors (see below), whose sum is σ = 164137377364032. Its totient is φ = 82068688682012.

The previous prime is 123103033023013. The next prime is 123103033023031. The reversal of 123103033023021 is 120320330301321.

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 123103033023021 - 2³ = 123103033023013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123103033022982 and 123103033023000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123103033023031) 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, 20517172170501 + ... + 20517172170506.

It is an arithmetic number, because the mean of its divisors is an integer number (41034344341008).

Almost surely, 2^{123103033023021} is an apocalyptic number.

It is an amenable number.

123103033023021 is a deficient number, since it is larger than the sum of its proper divisors (41034344341011).

123103033023021 is an equidigital number, since it uses as much as digits as its factorization.

123103033023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41034344341010.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123103033023021 its reverse (120320330301321), we get a palindrome (243423363324342).

The spelling of 123103033023021 in words is "one hundred twenty-three trillion, one hundred three billion, thirty-three million, twenty-three thousand, twenty-one".