21022311322 has 8 divisors (see below), whose sum is σ = 33193123200. Its totient is φ = 9957936924.

The previous prime is 21022311319. The next prime is 21022311337. The reversal of 21022311322 is 22311322012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 21022311322.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276609322 + ... + 276609397.

It is an arithmetic number, because the mean of its divisors is an integer number (4149140400).

Almost surely, 2^21022311322 is an apocalyptic number.

21022311322 is a deficient number, since it is larger than the sum of its proper divisors (12170811878).

21022311322 is a wasteful number, since it uses less digits than its factorization.

21022311322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553218740.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21022311322 its reverse (22311322012), we get a palindrome (43333633334).

The spelling of 21022311322 in words is "twenty-one billion, twenty-two million, three hundred eleven thousand, three hundred twenty-two".