222205656 has 96 divisors (see below), whose sum is σ = 586357200. Its totient is φ = 70156800.

The previous prime is 222205651. The next prime is 222205667. The reversal of 222205656 is 656502222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222205651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038530 + ... + 2038638.

Almost surely, 2^222205656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222205656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293178600).

222205656 is an abundant number, since it is smaller than the sum of its proper divisors (364151544).

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

222205656 is a wasteful number, since it uses less digits than its factorization.

222205656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 222205656 is about 14906.5641916573. The cubic root of 222205656 is about 605.6918124916.

Adding to 222205656 its reverse (656502222), we get a palindrome (878707878).

The spelling of 222205656 in words is "two hundred twenty-two million, two hundred five thousand, six hundred fifty-six".