122212225 has 18 divisors (see below), whose sum is σ = 158435606. Its totient is φ = 93508800.

The previous prime is 122212213. The next prime is 122212247. The reversal of 122212225 is 522212221.

It can be written as a sum of positive squares in 3 ways, for example, as 37994896 + 84217329 = 6164^2 + 9177^2 .

It is not a de Polignac number, because 122212225 - 2⁵ = 122212193 is a prime.

It is a Duffinian 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 17 ways as a sum of consecutive naturals, for example, 8605 + ... + 17845.

Almost surely, 2^122212225 is an apocalyptic number.

It is an amenable number.

122212225 is a deficient number, since it is larger than the sum of its proper divisors (36223381).

122212225 is an equidigital number, since it uses as much as digits as its factorization.

122212225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297 (or 9269 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 122212225 is about 11054.9638172180. The cubic root of 122212225 is about 496.2549864460.

Adding to 122212225 its reverse (522212221), we get a palindrome (644424446).

The spelling of 122212225 in words is "one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-five".