2101170517 has 2 divisors, whose sum is σ = 2101170518. Its totient is φ = 2101170516.

The previous prime is 2101170479. The next prime is 2101170527. The reversal of 2101170517 is 7150711012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493745201 + 607425316 = 38649^2 + 24646^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101170517 - 2⁷ = 2101170389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101170491 and 2101170500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101170527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050585258 + 1050585259.

It is an arithmetic number, because the mean of its divisors is an integer number (1050585259).

Almost surely, 2^2101170517 is an apocalyptic number.

It is an amenable number.

2101170517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101170517 is an equidigital number, since it uses as much as digits as its factorization.

2101170517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 25.

The square root of 2101170517 is about 45838.5265579076. The cubic root of 2101170517 is about 1280.8170477289.

Adding to 2101170517 its reverse (7150711012), we get a palindrome (9251881529).

The spelling of 2101170517 in words is "two billion, one hundred one million, one hundred seventy thousand, five hundred seventeen".