22124422321 has 4 divisors (see below), whose sum is σ = 22136708644. Its totient is φ = 22112136000.

The previous prime is 22124422297. The next prime is 22124422379. The reversal of 22124422321 is 12322442122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8273721600 + 13850700721 = 90960^2 + 117689^2 .

It is a cyclic number.

It is not a de Polignac number, because 22124422321 - 2²³ = 22116033713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22124422381) 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, 6140460 + ... + 6144061.

It is an arithmetic number, because the mean of its divisors is an integer number (5534177161).

Almost surely, 2^22124422321 is an apocalyptic number.

It is an amenable number.

22124422321 is a deficient number, since it is larger than the sum of its proper divisors (12286323).

22124422321 is a wasteful number, since it uses less digits than its factorization.

22124422321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12286322.

The product of its digits is 3072, while the sum is 25.

Adding to 22124422321 its reverse (12322442122), we get a palindrome (34446864443).

The spelling of 22124422321 in words is "twenty-two billion, one hundred twenty-four million, four hundred twenty-two thousand, three hundred twenty-one".