200002171 has 2 divisors, whose sum is σ = 200002172. Its totient is φ = 200002170.

The previous prime is 200002133. The next prime is 200002177. The reversal of 200002171 is 171200002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200002171 - 2¹¹ = 200000123 is a prime.

It is not a weakly prime, because it can be changed into another prime (200002177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100001085 + 100001086.

It is an arithmetic number, because the mean of its divisors is an integer number (100001086).

Almost surely, 2^200002171 is an apocalyptic number.

200002171 is a deficient number, since it is larger than the sum of its proper divisors (1).

200002171 is an equidigital number, since it uses as much as digits as its factorization.

200002171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 200002171 is about 14142.2123799638. The cubic root of 200002171 is about 584.8056636491.

Adding to 200002171 its reverse (171200002), we get a palindrome (371202173).

The spelling of 200002171 in words is "two hundred million, two thousand, one hundred seventy-one".