22213722 has 16 divisors (see below), whose sum is σ = 46359360. Its totient is φ = 7082592.

The previous prime is 22213703. The next prime is 22213733. The reversal of 22213722 is 22731222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80347 + ... + 80622.

It is an arithmetic number, because the mean of its divisors is an integer number (2897460).

Almost surely, 2^22213722 is an apocalyptic number.

22213722 is an abundant number, since it is smaller than the sum of its proper divisors (24145638).

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

22213722 is a wasteful number, since it uses less digits than its factorization.

22213722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160997.

The product of its digits is 672, while the sum is 21.

The square root of 22213722 is about 4713.1435369613. The cubic root of 22213722 is about 281.1083703703.

Adding to 22213722 its reverse (22731222), we get a palindrome (44944944).

The spelling of 22213722 in words is "twenty-two million, two hundred thirteen thousand, seven hundred twenty-two".