23022142021 has 2 divisors, whose sum is σ = 23022142022. Its totient is φ = 23022142020.

The previous prime is 23022142009. The next prime is 23022142049. The reversal of 23022142021 is 12024122032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15249780100 + 7772361921 = 123490^2 + 88161^2 .

It is a cyclic number.

It is not a de Polignac number, because 23022142021 - 2⁹ = 23022141509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23022142021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23022142061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11511071010 + 11511071011.

It is an arithmetic number, because the mean of its divisors is an integer number (11511071011).

Almost surely, 2^23022142021 is an apocalyptic number.

It is an amenable number.

23022142021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23022142021 is an equidigital number, since it uses as much as digits as its factorization.

23022142021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23022142021 its reverse (12024122032), we get a palindrome (35046264053).

The spelling of 23022142021 in words is "twenty-three billion, twenty-two million, one hundred forty-two thousand, twenty-one".