21323311322 has 16 divisors (see below), whose sum is σ = 32099550912. Its totient is φ = 10623486720.

The previous prime is 21323311309. The next prime is 21323311367. The reversal of 21323311322 is 22311332312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500538 + ... + 2509050.

It is an arithmetic number, because the mean of its divisors is an integer number (2006221932).

Almost surely, 2^21323311322 is an apocalyptic number.

21323311322 is a deficient number, since it is larger than the sum of its proper divisors (10776239590).

21323311322 is a wasteful number, since it uses less digits than its factorization.

21323311322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12853.

The product of its digits is 1296, while the sum is 23.

Adding to 21323311322 its reverse (22311332312), we get a palindrome (43634643634).

The spelling of 21323311322 in words is "twenty-one billion, three hundred twenty-three million, three hundred eleven thousand, three hundred twenty-two".