22250222 has 16 divisors (see below), whose sum is σ = 33938352. Its totient is φ = 10939200.

The previous prime is 22250213. The next prime is 22250227. The reversal of 22250222 is 22205222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22250222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22250227) by changing a digit.

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, 36722 + ... + 37322.

It is an arithmetic number, because the mean of its divisors is an integer number (2121147).

Almost surely, 2^22250222 is an apocalyptic number.

22250222 is a deficient number, since it is larger than the sum of its proper divisors (11688130).

22250222 is a wasteful number, since it uses less digits than its factorization.

22250222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22250222 is about 4717.0140979225. The cubic root of 22250222 is about 281.2622518449.

Adding to 22250222 its reverse (22205222), we get a palindrome (44455444).

The spelling of 22250222 in words is "twenty-two million, two hundred fifty thousand, two hundred twenty-two".