111197107717 has 2 divisors, whose sum is σ = 111197107718. Its totient is φ = 111197107716.

The previous prime is 111197107649. The next prime is 111197107759. The reversal of 111197107717 is 717701791111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96488511876 + 14708595841 = 310626^2 + 121279^2 .

It is a cyclic number.

It is not a de Polignac number, because 111197107717 - 2¹⁹ = 111196583429 is a prime.

It is a super-2 number, since 2×111197107717² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111197105717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55598553858 + 55598553859.

It is an arithmetic number, because the mean of its divisors is an integer number (55598553859).

Almost surely, 2^111197107717 is an apocalyptic number.

It is an amenable number.

111197107717 is a deficient number, since it is larger than the sum of its proper divisors (1).

111197107717 is an equidigital number, since it uses as much as digits as its factorization.

111197107717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21609, while the sum is 43.

Adding to 111197107717 its reverse (717701791111), we get a palindrome (828898898828).

The spelling of 111197107717 in words is "one hundred eleven billion, one hundred ninety-seven million, one hundred seven thousand, seven hundred seventeen".