21322010023 has 2 divisors, whose sum is σ = 21322010024. Its totient is φ = 21322010022.

The previous prime is 21322009991. The next prime is 21322010029. The reversal of 21322010023 is 32001022312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21322010023 - 2⁵ = 21322009991 is a prime.

It is a super-2 number, since 2×21322010023² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21322009979 and 21322010006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322010029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661005011 + 10661005012.

It is an arithmetic number, because the mean of its divisors is an integer number (10661005012).

Almost surely, 2^21322010023 is an apocalyptic number.

21322010023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322010023 is an equidigital number, since it uses as much as digits as its factorization.

21322010023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21322010023 its reverse (32001022312), we get a palindrome (53323032335).

The spelling of 21322010023 in words is "twenty-one billion, three hundred twenty-two million, ten thousand, twenty-three".