11123112017 has 2 divisors, whose sum is σ = 11123112018. Its totient is φ = 11123112016.

The previous prime is 11123111977. The next prime is 11123112029. The reversal of 11123112017 is 71021132111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10364054416 + 759057601 = 101804^2 + 27551^2 .

It is an emirp because it is prime and its reverse (71021132111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123112017 - 2⁸ = 11123111761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11123112017.

It is not a weakly prime, because it can be changed into another prime (11123112617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561556008 + 5561556009.

It is an arithmetic number, because the mean of its divisors is an integer number (5561556009).

Almost surely, 2^11123112017 is an apocalyptic number.

It is an amenable number.

11123112017 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123112017 is an equidigital number, since it uses as much as digits as its factorization.

11123112017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 11123112017 its reverse (71021132111), we get a palindrome (82144244128).

The spelling of 11123112017 in words is "eleven billion, one hundred twenty-three million, one hundred twelve thousand, seventeen".