21331322083 has 2 divisors, whose sum is σ = 21331322084. Its totient is φ = 21331322082.

The previous prime is 21331322069. The next prime is 21331322113. The reversal of 21331322083 is 38022313312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21331322083 - 2²⁵ = 21297767651 is a prime.

It is not a weakly prime, because it can be changed into another prime (21331322003) 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, 10665661041 + 10665661042.

It is an arithmetic number, because the mean of its divisors is an integer number (10665661042).

Almost surely, 2^21331322083 is an apocalyptic number.

21331322083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21331322083 is an equidigital number, since it uses as much as digits as its factorization.

21331322083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21331322083 its reverse (38022313312), we get a palindrome (59353635395).

The spelling of 21331322083 in words is "twenty-one billion, three hundred thirty-one million, three hundred twenty-two thousand, eighty-three".