222126612 has 12 divisors (see below), whose sum is σ = 518295456. Its totient is φ = 74042200.

The previous prime is 222126601. The next prime is 222126623. The reversal of 222126612 is 216621222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222126601) and next prime (222126623).

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a congruent number.

It is an unprimeable number.

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, 9255264 + ... + 9255287.

It is an arithmetic number, because the mean of its divisors is an integer number (43191288).

Almost surely, 2^222126612 is an apocalyptic number.

It is an amenable number.

222126612 is an abundant number, since it is smaller than the sum of its proper divisors (296168844).

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

222126612 is a wasteful number, since it uses less digits than its factorization.

222126612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510558 (or 18510556 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 222126612 is about 14903.9126406457. The cubic root of 222126612 is about 605.6199841644.

Adding to 222126612 its reverse (216621222), we get a palindrome (438747834).

The spelling of 222126612 in words is "two hundred twenty-two million, one hundred twenty-six thousand, six hundred twelve".