11155113331 has 2 divisors, whose sum is σ = 11155113332. Its totient is φ = 11155113330.

The previous prime is 11155113317. The next prime is 11155113341. The reversal of 11155113331 is 13331155111.

11155113331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13331155111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11155113331 is a prime.

It is a super-2 number, since 2×11155113331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11155113296 and 11155113305.

It is not a weakly prime, because it can be changed into another prime (11155113311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577556665 + 5577556666.

It is an arithmetic number, because the mean of its divisors is an integer number (5577556666).

Almost surely, 2^11155113331 is an apocalyptic number.

11155113331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155113331 is an equidigital number, since it uses as much as digits as its factorization.

11155113331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 675, while the sum is 25.

Adding to 11155113331 its reverse (13331155111), we get a palindrome (24486268442).

The spelling of 11155113331 in words is "eleven billion, one hundred fifty-five million, one hundred thirteen thousand, three hundred thirty-one".