123230321021 has 8 divisors (see below), whose sum is σ = 130789097784. Its totient is φ = 115705981440.

The previous prime is 123230321009. The next prime is 123230321023. The reversal of 123230321021 is 120123032321.

It can be written as a sum of positive squares in 4 ways, for example, as 24470344900 + 98759976121 = 156430^2 + 314261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123230321021 - 2²⁶ = 123163212157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123230320984 and 123230321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123230321023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8601920 + ... + 8616233.

It is an arithmetic number, because the mean of its divisors is an integer number (16348637223).

Almost surely, 2^123230321021 is an apocalyptic number.

It is an amenable number.

123230321021 is a deficient number, since it is larger than the sum of its proper divisors (7558776763).

123230321021 is a wasteful number, since it uses less digits than its factorization.

123230321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218591.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123230321021 its reverse (120123032321), we get a palindrome (243353353342).

The spelling of 123230321021 in words is "one hundred twenty-three billion, two hundred thirty million, three hundred twenty-one thousand, twenty-one".