2201971 has 2 divisors, whose sum is σ = 2201972. Its totient is φ = 2201970.

The previous prime is 2201957. The next prime is 2201977. The reversal of 2201971 is 1791022.

2201971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2201971 - 2¹⁵ = 2169203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2201977) 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, 1100985 + 1100986.

It is an arithmetic number, because the mean of its divisors is an integer number (1100986).

2^2201971 is an apocalyptic number.

2201971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201971 is an equidigital number, since it uses as much as digits as its factorization.

2201971 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 2201971 is about 1483.9039726343. The cubic root of 2201971 is about 130.0979734818.

Adding to 2201971 its reverse (1791022), we get a palindrome (3992993).

The spelling of 2201971 in words is "two million, two hundred one thousand, nine hundred seventy-one".