222231144 has 32 divisors (see below), whose sum is σ = 584820000. Its totient is φ = 70178112.

The previous prime is 222231143. The next prime is 222231167. The reversal of 222231144 is 441132222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 222231144.

It is not an unprimeable number, because it can be changed into a prime (222231143) 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 7 ways as a sum of consecutive naturals, for example, 243219 + ... + 244130.

It is an arithmetic number, because the mean of its divisors is an integer number (18275625).

Almost surely, 2^222231144 is an apocalyptic number.

222231144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222231144 is an abundant number, since it is smaller than the sum of its proper divisors (362588856).

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

222231144 is a wasteful number, since it uses less digits than its factorization.

222231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487377 (or 487373 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 222231144 is about 14907.4190925190. The cubic root of 222231144 is about 605.7149701420.

Adding to 222231144 its reverse (441132222), we get a palindrome (663363366).

The spelling of 222231144 in words is "two hundred twenty-two million, two hundred thirty-one thousand, one hundred forty-four".