22224100321 has 4 divisors (see below), whose sum is σ = 22251985812. Its totient is φ = 22196214832.

The previous prime is 22224100319. The next prime is 22224100331. The reversal of 22224100321 is 12300142222.

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 12832358400 + 9391741921 = 113280^2 + 96911^2 .

It is a cyclic number.

It is not a de Polignac number, because 22224100321 - 2¹ = 22224100319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22224100331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13941550 + ... + 13943143.

It is an arithmetic number, because the mean of its divisors is an integer number (5562996453).

Almost surely, 2^22224100321 is an apocalyptic number.

It is an amenable number.

22224100321 is a deficient number, since it is larger than the sum of its proper divisors (27885491).

22224100321 is an equidigital number, since it uses as much as digits as its factorization.

22224100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27885490.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22224100321 its reverse (12300142222), we get a palindrome (34524242543).

The spelling of 22224100321 in words is "twenty-two billion, two hundred twenty-four million, one hundred thousand, three hundred twenty-one".