12222656 has 14 divisors (see below), whose sum is σ = 24254460. Its totient is φ = 6111296.

The previous prime is 12222647. The next prime is 12222667. The reversal of 12222656 is 65622221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95426 + ... + 95553.

Almost surely, 2^12222656 is an apocalyptic number.

12222656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12222656 is a deficient number, since it is larger than the sum of its proper divisors (12031804).

12222656 is an equidigital number, since it uses as much as digits as its factorization.

12222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190991 (or 190981 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 12222656 is about 3496.0915319825. The cubic root of 12222656 is about 230.3501660482.

Adding to 12222656 its reverse (65622221), we get a palindrome (77844877).

The spelling of 12222656 in words is "twelve million, two hundred twenty-two thousand, six hundred fifty-six".