222867009 has 12 divisors (see below), whose sum is σ = 322073700. Its totient is φ = 148506624.

The previous prime is 222866953. The next prime is 222867019. The reversal of 222867009 is 900768222.

It can be written as a sum of positive squares in 2 ways, for example, as 18948609 + 203918400 = 4353^2 + 14280^2 .

It is not a de Polignac number, because 222867009 - 2²⁵ = 189312577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222867019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19597 + ... + 28805.

It is an arithmetic number, because the mean of its divisors is an integer number (26839475).

Almost surely, 2^222867009 is an apocalyptic number.

It is an amenable number.

222867009 is a deficient number, since it is larger than the sum of its proper divisors (99206691).

222867009 is a wasteful number, since it uses less digits than its factorization.

222867009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11904 (or 11901 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 222867009 is about 14928.7309909449. The cubic root of 222867009 is about 606.2921262540.

The spelling of 222867009 in words is "two hundred twenty-two million, eight hundred sixty-seven thousand, nine".