2209171 has 2 divisors, whose sum is σ = 2209172. Its totient is φ = 2209170.

The previous prime is 2209169. The next prime is 2209177. The reversal of 2209171 is 1719022.

2209171 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 is a cyclic number.

It is not a de Polignac number, because 2209171 - 2¹ = 2209169 is a prime.

Together with 2209169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2209177) 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, 1104585 + 1104586.

It is an arithmetic number, because the mean of its divisors is an integer number (1104586).

2^2209171 is an apocalyptic number.

2209171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209171 is an equidigital number, since it uses as much as digits as its factorization.

2209171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 2209171 is about 1486.3280257063. The cubic root of 2209171 is about 130.2396172355.

The spelling of 2209171 in words is "two million, two hundred nine thousand, one hundred seventy-one".