12122456 has 32 divisors (see below), whose sum is σ = 24116400. Its totient is φ = 5696640.

The previous prime is 12122447. The next prime is 12122477. The reversal of 12122456 is 65422121.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 26066 + ... + 26526.

Almost surely, 2^12122456 is an apocalyptic number.

It is an amenable number.

12122456 is a deficient number, since it is larger than the sum of its proper divisors (11993944).

12122456 is a wasteful number, since it uses less digits than its factorization.

12122456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 655 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 12122456 is about 3481.7317530218. The cubic root of 12122456 is about 229.7189762438.

Adding to 12122456 its reverse (65422121), we get a palindrome (77544577).

The spelling of 12122456 in words is "twelve million, one hundred twenty-two thousand, four hundred fifty-six".