23024213021 has 2 divisors, whose sum is σ = 23024213022. Its totient is φ = 23024213020.

The previous prime is 23024212987. The next prime is 23024213039. The reversal of 23024213021 is 12031242032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22525807396 + 498405625 = 150086^2 + 22325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23024213021 is a prime.

It is a super-2 number, since 2×23024213021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23024212984 and 23024213002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23024213321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11512106510 + 11512106511.

It is an arithmetic number, because the mean of its divisors is an integer number (11512106511).

Almost surely, 2^23024213021 is an apocalyptic number.

It is an amenable number.

23024213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23024213021 is an equidigital number, since it uses as much as digits as its factorization.

23024213021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23024213021 its reverse (12031242032), we get a palindrome (35055455053).

The spelling of 23024213021 in words is "twenty-three billion, twenty-four million, two hundred thirteen thousand, twenty-one".