123300321021 has 12 divisors (see below), whose sum is σ = 178944544480. Its totient is φ = 81810638280.

The previous prime is 123300321019. The next prime is 123300321047. The reversal of 123300321021 is 120123003321.

123300321021 is a `hidden beast` number, since 1 + 23 + 300 + 321 + 0 + 21 = 666.

It is not a de Polignac number, because 123300321021 - 2¹ = 123300321019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123300320985 and 123300321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123300320021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32462641 + ... + 32466438.

Almost surely, 2^123300321021 is an apocalyptic number.

It is an amenable number.

123300321021 is a deficient number, since it is larger than the sum of its proper divisors (55644223459).

123300321021 is a wasteful number, since it uses less digits than its factorization.

123300321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64929296 (or 64929293 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123300321021 its reverse (120123003321), we get a palindrome (243423324342).

The spelling of 123300321021 in words is "one hundred twenty-three billion, three hundred million, three hundred twenty-one thousand, twenty-one".