22520222 has 16 divisors (see below), whose sum is σ = 34301232. Its totient is φ = 11088000.

The previous prime is 22520219. The next prime is 22520227. The reversal of 22520222 is 22202522.

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 22520222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56528 + ... + 56924.

It is an arithmetic number, because the mean of its divisors is an integer number (2143827).

Almost surely, 2^22520222 is an apocalyptic number.

22520222 is a deficient number, since it is larger than the sum of its proper divisors (11781010).

22520222 is a wasteful number, since it uses less digits than its factorization.

22520222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

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

The square root of 22520222 is about 4745.5475974855. The cubic root of 22520222 is about 282.3953594751.

Adding to 22520222 its reverse (22202522), we get a palindrome (44722744).

The spelling of 22520222 in words is "twenty-two million, five hundred twenty thousand, two hundred twenty-two".