23330030021 has 2 divisors, whose sum is σ = 23330030022. Its totient is φ = 23330030020.

The previous prime is 23330030011. The next prime is 23330030027. The reversal of 23330030021 is 12003003332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20273488225 + 3056541796 = 142385^2 + 55286^2 .

It is a cyclic number.

It is not a de Polignac number, because 23330030021 - 2³⁴ = 6150160837 is a prime.

It is a super-2 number, since 2×23330030021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23330030027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665015010 + 11665015011.

It is an arithmetic number, because the mean of its divisors is an integer number (11665015011).

Almost surely, 2^23330030021 is an apocalyptic number.

It is an amenable number.

23330030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23330030021 is an equidigital number, since it uses as much as digits as its factorization.

23330030021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 23330030021 its reverse (12003003332), we get a palindrome (35333033353).

The spelling of 23330030021 in words is "twenty-three billion, three hundred thirty million, thirty thousand, twenty-one".