12122228 has 12 divisors (see below), whose sum is σ = 22330560. Its totient is φ = 5742072.

The previous prime is 12122221. The next prime is 12122237. The reversal of 12122228 is 82222121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122221) 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 3 ways as a sum of consecutive naturals, for example, 79676 + ... + 79827.

It is an arithmetic number, because the mean of its divisors is an integer number (1860880).

Almost surely, 2^12122228 is an apocalyptic number.

It is an amenable number.

12122228 is a deficient number, since it is larger than the sum of its proper divisors (10208332).

12122228 is a wasteful number, since it uses less digits than its factorization.

12122228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159526 (or 159524 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 12122228 is about 3481.6990105407. The cubic root of 12122228 is about 229.7175360446.

Adding to 12122228 its reverse (82222121), we get a palindrome (94344349).

The spelling of 12122228 in words is "twelve million, one hundred twenty-two thousand, two hundred twenty-eight".