22112210 has 16 divisors (see below), whose sum is σ = 41175000. Its totient is φ = 8539776.

The previous prime is 22112201. The next prime is 22112213. The reversal of 22112210 is 1221122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18722929 + 3389281 = 4327^2 + 1841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22112191 and 22112200.

It is not an unprimeable number, because it can be changed into a prime (22112213) 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, 37835 + ... + 38414.

Almost surely, 2^22112210 is an apocalyptic number.

22112210 is a deficient number, since it is larger than the sum of its proper divisors (19062790).

22112210 is a wasteful number, since it uses less digits than its factorization.

22112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76285.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22112210 is about 4702.3621723555. The cubic root of 22112210 is about 280.6795145604.

Adding to 22112210 its reverse (1221122), we get a palindrome (23333332).

It can be divided in two parts, 22112 and 210, that added together give a palindrome (22322).

The spelling of 22112210 in words is "twenty-two million, one hundred twelve thousand, two hundred ten".