20201101171 has 2 divisors, whose sum is σ = 20201101172. Its totient is φ = 20201101170.

The previous prime is 20201101147. The next prime is 20201101187. The reversal of 20201101171 is 17110110202.

It is an a-pointer prime, because the next prime (20201101187) can be obtained adding 20201101171 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201101171 - 2⁹ = 20201100659 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201108171) 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, 10100550585 + 10100550586.

It is an arithmetic number, because the mean of its divisors is an integer number (10100550586).

Almost surely, 2^20201101171 is an apocalyptic number.

20201101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201101171 is an equidigital number, since it uses as much as digits as its factorization.

20201101171 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 20201101171 its reverse (17110110202), we get a palindrome (37311211373).

The spelling of 20201101171 in words is "twenty billion, two hundred one million, one hundred one thousand, one hundred seventy-one".