222000009 has 32 divisors (see below), whose sum is σ = 388469760. Its totient is φ = 109252800.

The previous prime is 221999993. The next prime is 222000019. The reversal of 222000009 is 900000222.

It is not a de Polignac number, because 222000009 - 2⁴ = 221999993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222000019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20902 + ... + 29679.

It is an arithmetic number, because the mean of its divisors is an integer number (12139680).

Almost surely, 2^222000009 is an apocalyptic number.

It is an amenable number.

222000009 is a deficient number, since it is larger than the sum of its proper divisors (166469751).

222000009 is a wasteful number, since it uses less digits than its factorization.

222000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50621.

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

The square root of 222000009 is about 14899.6647277716. The cubic root of 222000009 is about 605.5049028336.

The spelling of 222000009 in words is "two hundred twenty-two million, nine", and thus it is an aban number.