11117281117 has 2 divisors, whose sum is σ = 11117281118. Its totient is φ = 11117281116.

The previous prime is 11117281079. The next prime is 11117281129. The reversal of 11117281117 is 71118271111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10914816676 + 202464441 = 104474^2 + 14229^2 .

It is a cyclic number.

It is not a de Polignac number, because 11117281117 - 2¹⁵ = 11117248349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11117281187) 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 as a sum of consecutive naturals, namely, 5558640558 + 5558640559.

It is an arithmetic number, because the mean of its divisors is an integer number (5558640559).

Almost surely, 2^11117281117 is an apocalyptic number.

It is an amenable number.

11117281117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11117281117 is an equidigital number, since it uses as much as digits as its factorization.

11117281117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784, while the sum is 31.

The spelling of 11117281117 in words is "eleven billion, one hundred seventeen million, two hundred eighty-one thousand, one hundred seventeen".