21322322999 has 4 divisors (see below), whose sum is σ = 21322723800. Its totient is φ = 21321922200.

The previous prime is 21322322953. The next prime is 21322323023. The reversal of 21322322999 is 99922322312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21322322999 - 2¹² = 21322318903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322322299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105677 + ... + 231974.

It is an arithmetic number, because the mean of its divisors is an integer number (5330680950).

Almost surely, 2^21322322999 is an apocalyptic number.

21322322999 is a deficient number, since it is larger than the sum of its proper divisors (400801).

21322322999 is an equidigital number, since it uses as much as digits as its factorization.

21322322999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400800.

The product of its digits is 209952, while the sum is 44.

The spelling of 21322322999 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-two thousand, nine hundred ninety-nine".