23023004021 has 2 divisors, whose sum is σ = 23023004022. Its totient is φ = 23023004020.

The previous prime is 23023004009. The next prime is 23023004051. The reversal of 23023004021 is 12040032032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14812107025 + 8210896996 = 121705^2 + 90614^2 .

It is a cyclic number.

It is not a de Polignac number, because 23023004021 - 2³⁰ = 21949262197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23023004051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11511502010 + 11511502011.

It is an arithmetic number, because the mean of its divisors is an integer number (11511502011).

Almost surely, 2^23023004021 is an apocalyptic number.

It is an amenable number.

23023004021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23023004021 is an equidigital number, since it uses as much as digits as its factorization.

23023004021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23023004021 its reverse (12040032032), we get a palindrome (35063036053).

The spelling of 23023004021 in words is "twenty-three billion, twenty-three million, four thousand, twenty-one".