21022331322 has 16 divisors (see below), whose sum is σ = 42243928992. Its totient is φ = 6974232720.

The previous prime is 21022331311. The next prime is 21022331347. The reversal of 21022331322 is 22313322012.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 8301393 + ... + 8303924.

It is an arithmetic number, because the mean of its divisors is an integer number (2640245562).

Almost surely, 2^21022331322 is an apocalyptic number.

21022331322 is an abundant number, since it is smaller than the sum of its proper divisors (21221597670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022331322 is a wasteful number, since it uses less digits than its factorization.

21022331322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605533.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21022331322 its reverse (22313322012), we get a palindrome (43335653334).

The spelling of 21022331322 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, three hundred twenty-two".