22021323321 has 8 divisors (see below), whose sum is σ = 29388681504. Its totient is φ = 14667423680.

The previous prime is 22021323287. The next prime is 22021323329. The reversal of 22021323321 is 12332312022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22021323321 - 2²⁵ = 21987768889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021323329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360816 + ... + 3367361.

It is an arithmetic number, because the mean of its divisors is an integer number (3673585188).

Almost surely, 2^22021323321 is an apocalyptic number.

It is an amenable number.

22021323321 is a deficient number, since it is larger than the sum of its proper divisors (7367358183).

22021323321 is a wasteful number, since it uses less digits than its factorization.

22021323321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729271.

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

Adding to 22021323321 its reverse (12332312022), we get a palindrome (34353635343).

The spelling of 22021323321 in words is "twenty-two billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty-one".