222222004 has 12 divisors (see below), whose sum is σ = 396226404. Its totient is φ = 109014464.

The previous prime is 222221971. The next prime is 222222029. The reversal of 222222004 is 400222222.

It can be written as a sum of positive squares in 2 ways, for example, as 195720100 + 26501904 = 13990^2 + 5148^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 523897 + ... + 524320.

It is an arithmetic number, because the mean of its divisors is an integer number (33018867).

Almost surely, 2^222222004 is an apocalyptic number.

It is an amenable number.

222222004 is a deficient number, since it is larger than the sum of its proper divisors (174004400).

222222004 is a wasteful number, since it uses less digits than its factorization.

222222004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048274 (or 1048272 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 222222004 is about 14907.1125306010. The cubic root of 222222004 is about 605.7066660093.

Adding to 222222004 its reverse (400222222), we get a palindrome (622444226).

The spelling of 222222004 in words is "two hundred twenty-two million, two hundred twenty-two thousand, four".