2116291 has 2 divisors, whose sum is σ = 2116292. Its totient is φ = 2116290.

The previous prime is 2116199. The next prime is 2116307. The reversal of 2116291 is 1926112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116291 - 2¹¹ = 2114243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058145 + 1058146.

It is an arithmetic number, because the mean of its divisors is an integer number (1058146).

2^2116291 is an apocalyptic number.

2116291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116291 is an equidigital number, since it uses as much as digits as its factorization.

2116291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 2116291 is about 1454.7477444561. The cubic root of 2116291 is about 128.3882053910.

The spelling of 2116291 in words is "two million, one hundred sixteen thousand, two hundred ninety-one".