23020036021 has 2 divisors, whose sum is σ = 23020036022. Its totient is φ = 23020036020.

The previous prime is 23020036001. The next prime is 23020036043. The reversal of 23020036021 is 12063002032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15778876996 + 7241159025 = 125614^2 + 85095^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020036021 - 2²⁹ = 22483165109 is a prime.

It is a super-3 number, since 3×23020036021³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23020036021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020036001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510018010 + 11510018011.

It is an arithmetic number, because the mean of its divisors is an integer number (11510018011).

Almost surely, 2^23020036021 is an apocalyptic number.

It is an amenable number.

23020036021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020036021 is an equidigital number, since it uses as much as digits as its factorization.

23020036021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23020036021 its reverse (12063002032), we get a palindrome (35083038053).

The spelling of 23020036021 in words is "twenty-three billion, twenty million, thirty-six thousand, twenty-one".