21322322998 has 16 divisors (see below), whose sum is σ = 33899794704. Its totient is φ = 10023685120.

The previous prime is 21322322953. The next prime is 21322323023. The reversal of 21322322998 is 89922322312.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 289915 + ... + 355942.

It is an arithmetic number, because the mean of its divisors is an integer number (2118737169).

Almost surely, 2^21322322998 is an apocalyptic number.

21322322998 is a deficient number, since it is larger than the sum of its proper divisors (12577471706).

21322322998 is a wasteful number, since it uses less digits than its factorization.

21322322998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646847.

The product of its digits is 186624, while the sum is 43.

The spelling of 21322322998 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-two thousand, nine hundred ninety-eight".