21022329959 has 2 divisors, whose sum is σ = 21022329960. Its totient is φ = 21022329958.

The previous prime is 21022329953. The next prime is 21022329983. The reversal of 21022329959 is 95992322012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022329959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022329953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511164979 + 10511164980.

It is an arithmetic number, because the mean of its divisors is an integer number (10511164980).

Almost surely, 2^21022329959 is an apocalyptic number.

21022329959 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022329959 is an equidigital number, since it uses as much as digits as its factorization.

21022329959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 21022329959 in words is "twenty-one billion, twenty-two million, three hundred twenty-nine thousand, nine hundred fifty-nine".