222222056 has 48 divisors (see below), whose sum is σ = 487555200. Its totient is φ = 94676064.

The previous prime is 222222031. The next prime is 222222061. The reversal of 222222056 is 650222222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68585 + ... + 71751.

It is an arithmetic number, because the mean of its divisors is an integer number (10157400).

Almost surely, 2^222222056 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 222222056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243777600).

222222056 is an abundant number, since it is smaller than the sum of its proper divisors (265333144).

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

222222056 is a wasteful number, since it uses less digits than its factorization.

222222056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 222222056 is about 14907.1142747347. The cubic root of 222222056 is about 605.7067132544.

Adding to 222222056 its reverse (650222222), we get a palindrome (872444278).

The spelling of 222222056 in words is "two hundred twenty-two million, two hundred twenty-two thousand, fifty-six".