22243321 has 2 divisors, whose sum is σ = 22243322. Its totient is φ = 22243320.

The previous prime is 22243313. The next prime is 22243349. The reversal of 22243321 is 12334222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 518400 = 4661^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 22243321 - 2³ = 22243313 is a prime.

It is not a weakly prime, because it can be changed into another prime (22243301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121660 + 11121661.

It is an arithmetic number, because the mean of its divisors is an integer number (11121661).

Almost surely, 2^22243321 is an apocalyptic number.

It is an amenable number.

22243321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22243321 is an equidigital number, since it uses as much as digits as its factorization.

22243321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 19.

The square root of 22243321 is about 4716.2825403065. The cubic root of 22243321 is about 281.2331706144.

Adding to 22243321 its reverse (12334222), we get a palindrome (34577543).

Subtracting from 22243321 its reverse (12334222), we obtain a palindrome (9909099).

The spelling of 22243321 in words is "twenty-two million, two hundred forty-three thousand, three hundred twenty-one".