12222056 has 32 divisors (see below), whose sum is σ = 28572480. Its totient is φ = 4761600.

The previous prime is 12222053. The next prime is 12222101. The reversal of 12222056 is 65022221.

It is not an unprimeable number, because it can be changed into a prime (12222053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9305 + ... + 10536.

It is an arithmetic number, because the mean of its divisors is an integer number (892890).

Almost surely, 2^12222056 is an apocalyptic number.

It is an amenable number.

12222056 is an abundant number, since it is smaller than the sum of its proper divisors (16350424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12222056 is a wasteful number, since it uses less digits than its factorization.

12222056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865 (or 19861 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12222056 is about 3496.0057208191. The cubic root of 12222056 is about 230.3463967539.

Adding to 12222056 its reverse (65022221), we get a palindrome (77244277).

The spelling of 12222056 in words is "twelve million, two hundred twenty-two thousand, fifty-six".