1001200171 has 2 divisors, whose sum is σ = 1001200172. Its totient is φ = 1001200170.

The previous prime is 1001200169. The next prime is 1001200219. The reversal of 1001200171 is 1710021001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001200171 - 2¹ = 1001200169 is a prime.

Together with 1001200169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1001200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600085 + 500600086.

It is an arithmetic number, because the mean of its divisors is an integer number (500600086).

Almost surely, 2^1001200171 is an apocalyptic number.

1001200171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001200171 is an equidigital number, since it uses as much as digits as its factorization.

1001200171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1001200171 is about 31641.7472810842. The cubic root of 1001200171 is about 1000.3998970610.

Adding to 1001200171 its reverse (1710021001), we get a palindrome (2711221172).

The spelling of 1001200171 in words is "one billion, one million, two hundred thousand, one hundred seventy-one".