1020200101171 has 2 divisors, whose sum is σ = 1020200101172. Its totient is φ = 1020200101170.

The previous prime is 1020200101163. The next prime is 1020200101181. The reversal of 1020200101171 is 1711010020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020200101171 - 2³ = 1020200101163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020200101181) 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, 510100050585 + 510100050586.

It is an arithmetic number, because the mean of its divisors is an integer number (510100050586).

Almost surely, 2^{1020200101171} is an apocalyptic number.

1020200101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020200101171 is an equidigital number, since it uses as much as digits as its factorization.

1020200101171 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 1020200101171 its reverse (1711010020201), we get a palindrome (2731210121372).

The spelling of 1020200101171 in words is "one trillion, twenty billion, two hundred million, one hundred one thousand, one hundred seventy-one".