22216223 has 4 divisors (see below), whose sum is σ = 22245240. Its totient is φ = 22187208.

The previous prime is 22216217. The next prime is 22216241. The reversal of 22216223 is 32261222.

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

It is a cyclic number.

It is not a de Polignac number, because 22216223 - 2²⁰ = 21167647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22216195 and 22216204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22216283) 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, 13328 + ... + 14901.

It is an arithmetic number, because the mean of its divisors is an integer number (5561310).

Almost surely, 2^22216223 is an apocalyptic number.

22216223 is a deficient number, since it is larger than the sum of its proper divisors (29017).

22216223 is an equidigital number, since it uses as much as digits as its factorization.

22216223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29016.

The product of its digits is 576, while the sum is 20.

The square root of 22216223 is about 4713.4088513516. The cubic root of 22216223 is about 281.1189197903.

Adding to 22216223 its reverse (32261222), we get a palindrome (54477445).

The spelling of 22216223 in words is "twenty-two million, two hundred sixteen thousand, two hundred twenty-three".