222231856 has 120 divisors (see below), whose sum is σ = 555459984. Its totient is φ = 85155840.

The previous prime is 222231851. The next prime is 222231859. The reversal of 222231856 is 658132222.

It is not an unprimeable number, because it can be changed into a prime (222231851) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 629376 + ... + 629728.

Almost surely, 2^222231856 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 222231856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277729992).

222231856 is an abundant number, since it is smaller than the sum of its proper divisors (333228128).

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

222231856 is a wasteful number, since it uses less digits than its factorization.

222231856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 446 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 222231856 is about 14907.4429732265. The cubic root of 222231856 is about 605.7156170189.

The spelling of 222231856 in words is "two hundred twenty-two million, two hundred thirty-one thousand, eight hundred fifty-six".