22213243 has 16 divisors (see below), whose sum is σ = 24615360. Its totient is φ = 19920384.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213243 is 34231222.

It is a cyclic number.

It is not a de Polignac number, because 22213243 - 2¹⁷ = 22082171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22213243.

It is not an unprimeable number, because it can be changed into a prime (22213343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84330 + ... + 84592.

It is an arithmetic number, because the mean of its divisors is an integer number (1538460).

Almost surely, 2^22213243 is an apocalyptic number.

22213243 is a deficient number, since it is larger than the sum of its proper divisors (2402117).

22213243 is a wasteful number, since it uses less digits than its factorization.

22213243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

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

The square root of 22213243 is about 4713.0927213455. The cubic root of 22213243 is about 281.1063498192.

Adding to 22213243 its reverse (34231222), we get a palindrome (56444465).

The spelling of 22213243 in words is "twenty-two million, two hundred thirteen thousand, two hundred forty-three".