222009 has 8 divisors (see below), whose sum is σ = 303072. Its totient is φ = 144480.

The previous prime is 222007. The next prime is 222011. The reversal of 222009 is 900222.

It is an interprime number because it is at equal distance from previous prime (222007) and next prime (222011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222009 - 2¹ = 222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732 + ... + 989.

It is an arithmetic number, because the mean of its divisors is an integer number (37884).

2²²²⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

222009 is a deficient number, since it is larger than the sum of its proper divisors (81063).

222009 is a wasteful number, since it uses less digits than its factorization.

222009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 222009 is about 471.1783101969. The cubic root of 222009 is about 60.5513077039.

The spelling of 222009 in words is "two hundred twenty-two thousand, nine".