22223216 has 20 divisors (see below), whose sum is σ = 45590832. Its totient is φ = 10457856.

The previous prime is 22223207. The next prime is 22223219. The reversal of 22223216 is 61232222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40580 + ... + 41123.

Almost surely, 2^22223216 is an apocalyptic number.

It is an amenable number.

22223216 is an abundant number, since it is smaller than the sum of its proper divisors (23367616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22223216 is a wasteful number, since it uses less digits than its factorization.

22223216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81728 (or 81722 counting only the distinct ones).

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

The square root of 22223216 is about 4714.1506127828. The cubic root of 22223216 is about 281.1484126280.

Adding to 22223216 its reverse (61232222), we get a palindrome (83455438).

The spelling of 22223216 in words is "twenty-two million, two hundred twenty-three thousand, two hundred sixteen".