222242112 has 42 divisors (see below), whose sum is σ = 637018538. Its totient is φ = 74080512.

The previous prime is 222242087. The next prime is 222242113. The reversal of 222242112 is 211242222.

It can be written as a sum of positive squares in only one way, i.e., 222129216 + 112896 = 14904^2 + 336^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222242113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192343 + ... + 193494.

Almost surely, 2^222242112 is an apocalyptic number.

It is an amenable number.

222242112 is an abundant number, since it is smaller than the sum of its proper divisors (414776426).

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

222242112 is a wasteful number, since it uses less digits than its factorization.

222242112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385855 (or 385842 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 222242112 is about 14907.7869584992. The cubic root of 222242112 is about 605.7249348007.

Adding to 222242112 its reverse (211242222), we get a palindrome (433484334).

It can be divided in two parts, 22224 and 2112, that added together give a square (24336 = 156²).

The spelling of 222242112 in words is "two hundred twenty-two million, two hundred forty-two thousand, one hundred twelve".