2105100171 has 10 divisors (see below), whose sum is σ = 3144655932. Its totient is φ = 1403400060.

The previous prime is 2105100121. The next prime is 2105100181. The reversal of 2105100171 is 1710015012.

It is a happy number.

It is not a de Polignac number, because 2105100171 - 2¹⁰ = 2105099147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105100121) 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 in 9 ways as a sum of consecutive naturals, for example, 12994365 + ... + 12994526.

Almost surely, 2^2105100171 is an apocalyptic number.

2105100171 is a deficient number, since it is larger than the sum of its proper divisors (1039555761).

2105100171 is an equidigital number, since it uses as much as digits as its factorization.

2105100171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988903 (or 25988894 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 2105100171 is about 45881.3706312268. The cubic root of 2105100171 is about 1281.6150209440.

Adding to 2105100171 its reverse (1710015012), we get a palindrome (3815115183).

The spelling of 2105100171 in words is "two billion, one hundred five million, one hundred thousand, one hundred seventy-one".