2226666209 has 2 divisors, whose sum is σ = 2226666210. Its totient is φ = 2226666208.

The previous prime is 2226666203. The next prime is 2226666223. The reversal of 2226666209 is 9026666222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1838694400 + 387971809 = 42880^2 + 19697^2 .

It is a cyclic number.

It is not a de Polignac number, because 2226666209 - 2⁴ = 2226666193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2226666203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113333104 + 1113333105.

It is an arithmetic number, because the mean of its divisors is an integer number (1113333105).

Almost surely, 2^2226666209 is an apocalyptic number.

It is an amenable number.

2226666209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2226666209 is an equidigital number, since it uses as much as digits as its factorization.

2226666209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 2226666209 is about 47187.5641350558. The cubic root of 2226666209 is about 1305.8251821737.

The spelling of 2226666209 in words is "two billion, two hundred twenty-six million, six hundred sixty-six thousand, two hundred nine".