21323333023 has 2 divisors, whose sum is σ = 21323333024. Its totient is φ = 21323333022.

The previous prime is 21323332991. The next prime is 21323333027. The reversal of 21323333023 is 32033332312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21323333023 - 2⁵ = 21323332991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323333027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661666511 + 10661666512.

It is an arithmetic number, because the mean of its divisors is an integer number (10661666512).

Almost surely, 2^21323333023 is an apocalyptic number.

21323333023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323333023 is an equidigital number, since it uses as much as digits as its factorization.

21323333023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 21323333023 its reverse (32033332312), we get a palindrome (53356665335).

The spelling of 21323333023 in words is "twenty-one billion, three hundred twenty-three million, three hundred thirty-three thousand, twenty-three".