11111011243 has 2 divisors, whose sum is σ = 11111011244. Its totient is φ = 11111011242.

The previous prime is 11111011207. The next prime is 11111011253. The reversal of 11111011243 is 34211011111.

It is a strong prime.

It is an emirp because it is prime and its reverse (34211011111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111011243 - 2³³ = 2521076651 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111011253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555505621 + 5555505622.

It is an arithmetic number, because the mean of its divisors is an integer number (5555505622).

Almost surely, 2^11111011243 is an apocalyptic number.

11111011243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111011243 is an equidigital number, since it uses as much as digits as its factorization.

11111011243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11111011243 its reverse (34211011111), we get a palindrome (45322022354).

The spelling of 11111011243 in words is "eleven billion, one hundred eleven million, eleven thousand, two hundred forty-three".