2222001209 has 2 divisors, whose sum is σ = 2222001210. Its totient is φ = 2222001208.

The previous prime is 2222001193. The next prime is 2222001211. The reversal of 2222001209 is 9021002222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1385923984 + 836077225 = 37228^2 + 28915^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222001209 - 2⁴ = 2222001193 is a prime.

Together with 2222001211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2222001259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111000604 + 1111000605.

It is an arithmetic number, because the mean of its divisors is an integer number (1111000605).

Almost surely, 2^2222001209 is an apocalyptic number.

It is an amenable number.

2222001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222001209 is an equidigital number, since it uses as much as digits as its factorization.

2222001209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2222001209 is about 47138.1078215917. The cubic root of 2222001209 is about 1304.9126170797.

The spelling of 2222001209 in words is "two billion, two hundred twenty-two million, one thousand, two hundred nine".