11011231247 has 2 divisors, whose sum is σ = 11011231248. Its totient is φ = 11011231246.

The previous prime is 11011231229. The next prime is 11011231261. The reversal of 11011231247 is 74213211011.

It is a strong prime.

It is an emirp because it is prime and its reverse (74213211011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11011231247 - 2⁸ = 11011230991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011231277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505615623 + 5505615624.

It is an arithmetic number, because the mean of its divisors is an integer number (5505615624).

Almost surely, 2^11011231247 is an apocalyptic number.

11011231247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011231247 is an equidigital number, since it uses as much as digits as its factorization.

11011231247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 11011231247 its reverse (74213211011), we get a palindrome (85224442258).

The spelling of 11011231247 in words is "eleven billion, eleven million, two hundred thirty-one thousand, two hundred forty-seven".