2201209 has 2 divisors, whose sum is σ = 2201210. Its totient is φ = 2201208.

The previous prime is 2201203. The next prime is 2201273. The reversal of 2201209 is 9021022.

It is a happy number.

2201209 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., 2111209 + 90000 = 1453^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201209 - 2³ = 2201201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201192 and 2201201.

It is not a weakly prime, because it can be changed into another prime (2201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100604 + 1100605.

It is an arithmetic number, because the mean of its divisors is an integer number (1100605).

2^2201209 is an apocalyptic number.

It is an amenable number.

2201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201209 is an equidigital number, since it uses as much as digits as its factorization.

2201209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2201209 is about 1483.6471952590. The cubic root of 2201209 is about 130.0829647929.

The spelling of 2201209 in words is "two million, two hundred one thousand, two hundred nine".