123300021321 has 12 divisors (see below), whose sum is σ = 178140048372. Its totient is φ = 82181544576.

The previous prime is 123300021289. The next prime is 123300021329. The reversal of 123300021321 is 123120003321.

123300021321 is a `hidden beast` number, since 1 + 23 + 300 + 0 + 21 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56363982921 + 66936038400 = 237411^2 + 258720^2 .

It is not a de Polignac number, because 123300021321 - 2⁵ = 123300021289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123300021294 and 123300021303.

It is not an unprimeable number, because it can be changed into a prime (123300021329) 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, 1496796 + ... + 1577021.

It is an arithmetic number, because the mean of its divisors is an integer number (14845004031).

Almost surely, 2^123300021321 is an apocalyptic number.

It is an amenable number.

123300021321 is a deficient number, since it is larger than the sum of its proper divisors (54840027051).

123300021321 is a wasteful number, since it uses less digits than its factorization.

123300021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078280 (or 3078277 counting only the distinct ones).

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

Adding to 123300021321 its reverse (123120003321), we get a palindrome (246420024642).

The spelling of 123300021321 in words is "one hundred twenty-three billion, three hundred million, twenty-one thousand, three hundred twenty-one".