23233310021 has 2 divisors, whose sum is σ = 23233310022. Its totient is φ = 23233310020.

The previous prime is 23233310017. The next prime is 23233310027. The reversal of 23233310021 is 12001333232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19738845025 + 3494464996 = 140495^2 + 59114^2 .

It is a cyclic number.

It is not a de Polignac number, because 23233310021 - 2² = 23233310017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23233309975 and 23233310002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23233310027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11616655010 + 11616655011.

It is an arithmetic number, because the mean of its divisors is an integer number (11616655011).

Almost surely, 2^23233310021 is an apocalyptic number.

It is an amenable number.

23233310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23233310021 is an equidigital number, since it uses as much as digits as its factorization.

23233310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23233310021 its reverse (12001333232), we get a palindrome (35234643253).

The spelling of 23233310021 in words is "twenty-three billion, two hundred thirty-three million, three hundred ten thousand, twenty-one".