1001020171 has 2 divisors, whose sum is σ = 1001020172. Its totient is φ = 1001020170.

The previous prime is 1001020159. The next prime is 1001020213. The reversal of 1001020171 is 1710201001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001020171 - 2²⁵ = 967465739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001020151) 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, 500510085 + 500510086.

It is an arithmetic number, because the mean of its divisors is an integer number (500510086).

Almost surely, 2^1001020171 is an apocalyptic number.

1001020171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001020171 is an equidigital number, since it uses as much as digits as its factorization.

1001020171 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 1001020171 is about 31638.9028096740. The cubic root of 1001020171 is about 1000.3399414267.

Adding to 1001020171 its reverse (1710201001), we get a palindrome (2711221172).

The spelling of 1001020171 in words is "one billion, one million, twenty thousand, one hundred seventy-one".