222112009 has 16 divisors (see below), whose sum is σ = 257424768. Its totient is φ = 187713792.

The previous prime is 222112003. The next prime is 222112019. The reversal of 222112009 is 900211222.

It is not a de Polignac number, because 222112009 - 2³ = 222112001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112001) 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 15 ways as a sum of consecutive naturals, for example, 178939 + ... + 180175.

It is an arithmetic number, because the mean of its divisors is an integer number (16089048).

Almost surely, 2^222112009 is an apocalyptic number.

It is an amenable number.

222112009 is a deficient number, since it is larger than the sum of its proper divisors (35312759).

222112009 is a wasteful number, since it uses less digits than its factorization.

222112009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 222112009 is about 14903.4227276824. The cubic root of 222112009 is about 605.6067123606.

The spelling of 222112009 in words is "two hundred twenty-two million, one hundred twelve thousand, nine".