22153705321 has 4 divisors (see below), whose sum is σ = 24167678544. Its totient is φ = 20139732100.

The previous prime is 22153705319. The next prime is 22153705331. The reversal of 22153705321 is 12350735122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22153705321 - 2¹ = 22153705319 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22153705331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006986595 + ... + 1006986616.

It is an arithmetic number, because the mean of its divisors is an integer number (6041919636).

Almost surely, 2^22153705321 is an apocalyptic number.

It is an amenable number.

22153705321 is a deficient number, since it is larger than the sum of its proper divisors (2013973223).

22153705321 is a wasteful number, since it uses less digits than its factorization.

22153705321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013973222.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 22153705321 in words is "twenty-two billion, one hundred fifty-three million, seven hundred five thousand, three hundred twenty-one".