21022232322 has 32 divisors (see below), whose sum is σ = 51747034752. Its totient is φ = 5544324864.

The previous prime is 21022232321. The next prime is 21022232359. The reversal of 21022232322 is 22323222012.

It is a super-3 number, since 3×21022232322³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21022232321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19250583 + ... + 19251674.

It is an arithmetic number, because the mean of its divisors is an integer number (1617094836).

Almost surely, 2^21022232322 is an apocalyptic number.

21022232322 is an abundant number, since it is smaller than the sum of its proper divisors (30724802430).

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

21022232322 is a wasteful number, since it uses less digits than its factorization.

21022232322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38502282.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21022232322 its reverse (22323222012), we get a palindrome (43345454334).

The spelling of 21022232322 in words is "twenty-one billion, twenty-two million, two hundred thirty-two thousand, three hundred twenty-two".