2102117 has 2 divisors, whose sum is σ = 2102118. Its totient is φ = 2102116.

The previous prime is 2102099. The next prime is 2102137. The reversal of 2102117 is 7112012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1515361 + 586756 = 1231^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102117 - 2¹⁰ = 2101093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051058 + 1051059.

It is an arithmetic number, because the mean of its divisors is an integer number (1051059).

2^2102117 is an apocalyptic number.

It is an amenable number.

2102117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102117 is an equidigital number, since it uses as much as digits as its factorization.

2102117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 2102117 is about 1449.8679250194. The cubic root of 2102117 is about 128.1009335722.

Adding to 2102117 its reverse (7112012), we get a palindrome (9214129).

The spelling of 2102117 in words is "two million, one hundred two thousand, one hundred seventeen".