12222256 has 20 divisors (see below), whose sum is σ = 24185952. Its totient is φ = 5980736.

The previous prime is 12222241. The next prime is 12222257. The reversal of 12222256 is 65222221.

12222256 = T₂₈₅₃ + T₂₈₅₄ + T₂₈₅₅.

It is a happy number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12222257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7375 + ... + 8878.

Almost surely, 2^12222256 is an apocalyptic number.

12222256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12222256 is the 2855-th centered triangular number.

It is an amenable number.

12222256 is a deficient number, since it is larger than the sum of its proper divisors (11963696).

12222256 is a wasteful number, since it uses less digits than its factorization.

12222256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16308 (or 16302 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 12222256 is about 3496.0343247743. The cubic root of 12222256 is about 230.3476531990.

Adding to 12222256 its reverse (65222221), we get a palindrome (77444477).

The spelling of 12222256 in words is "twelve million, two hundred twenty-two thousand, two hundred fifty-six".