123001003102021 has 4 divisors (see below), whose sum is σ = 134182912474944. Its totient is φ = 111819093729100.

The previous prime is 123001003102013. The next prime is 123001003102027. The reversal of 123001003102021 is 120201300100321.

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 123001003102021 - 2³ = 123001003102013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123001003101986 and 123001003102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001003102027) 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, 5590954686445 + ... + 5590954686466.

It is an arithmetic number, because the mean of its divisors is an integer number (33545728118736).

Almost surely, 2^{123001003102021} is an apocalyptic number.

123001003102021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123001003102021 is a deficient number, since it is larger than the sum of its proper divisors (11181909372923).

123001003102021 is a wasteful number, since it uses less digits than its factorization.

123001003102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181909372922.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123001003102021 its reverse (120201300100321), we get a palindrome (243202303202342).

The spelling of 123001003102021 in words is "one hundred twenty-three trillion, one billion, three million, one hundred two thousand, twenty-one".