1001012002171 has 2 divisors, whose sum is σ = 1001012002172. Its totient is φ = 1001012002170.

The previous prime is 1001012002153. The next prime is 1001012002247. The reversal of 1001012002171 is 1712002101001.

It is a weak prime.

It is an emirp because it is prime and its reverse (1712002101001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001012002171 - 2⁹ = 1001012001659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001012002271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500506001085 + 500506001086.

It is an arithmetic number, because the mean of its divisors is an integer number (500506001086).

Almost surely, 2^{1001012002171} is an apocalyptic number.

1001012002171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001012002171 is an equidigital number, since it uses as much as digits as its factorization.

1001012002171 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 16.

Adding to 1001012002171 its reverse (1712002101001), we get a palindrome (2713014103172).

The spelling of 1001012002171 in words is "one trillion, one billion, twelve million, two thousand, one hundred seventy-one".