222144004 has 12 divisors (see below), whose sum is σ = 399259084. Its totient is φ = 108069984.

The previous prime is 222144001. The next prime is 222144007. The reversal of 222144004 is 400441222.

It is an interprime number because it is at equal distance from previous prime (222144001) and next prime (222144007).

It can be written as a sum of positive squares in 2 ways, for example, as 194602500 + 27541504 = 13950^2 + 5248^2 .

It is not an unprimeable number, because it can be changed into a prime (222144001) 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 3 ways as a sum of consecutive naturals, for example, 750339 + ... + 750634.

Almost surely, 2^222144004 is an apocalyptic number.

It is an amenable number.

222144004 is a deficient number, since it is larger than the sum of its proper divisors (177115080).

222144004 is a wasteful number, since it uses less digits than its factorization.

222144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501014 (or 1501012 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 222144004 is about 14904.4961001706. The cubic root of 222144004 is about 605.6357899666.

Adding to 222144004 its reverse (400441222), we get a palindrome (622585226).

It can be divided in two parts, 2221 and 44004, that added together give a square (46225 = 215²).

The spelling of 222144004 in words is "two hundred twenty-two million, one hundred forty-four thousand, four".