222118009 has 2 divisors, whose sum is σ = 222118010. Its totient is φ = 222118008.

The previous prime is 222118003. The next prime is 222118021. The reversal of 222118009 is 900811222.

222118009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218005225 + 4112784 = 14765^2 + 2028^2 .

It is a cyclic number.

It is not a de Polignac number, because 222118009 - 2¹⁹ = 221593721 is a prime.

It is not a weakly prime, because it can be changed into another prime (222118003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111059004 + 111059005.

It is an arithmetic number, because the mean of its divisors is an integer number (111059005).

Almost surely, 2^222118009 is an apocalyptic number.

It is an amenable number.

222118009 is a deficient number, since it is larger than the sum of its proper divisors (1).

222118009 is an equidigital number, since it uses as much as digits as its factorization.

222118009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 222118009 is about 14903.6240223645. The cubic root of 222118009 is about 605.6121654765.

The spelling of 222118009 in words is "two hundred twenty-two million, one hundred eighteen thousand, nine".