11289230881 has 2 divisors, whose sum is σ = 11289230882. Its totient is φ = 11289230880.

The previous prime is 11289230857. The next prime is 11289230929. The reversal of 11289230881 is 18803298211.

It is a happy number.

11289230881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10741249600 + 547981281 = 103640^2 + 23409^2 .

It is a cyclic number.

It is not a de Polignac number, because 11289230881 - 2¹⁹ = 11288706593 is a prime.

It is a super-2 number, since 2×11289230881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11289230081) 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, 5644615440 + 5644615441.

It is an arithmetic number, because the mean of its divisors is an integer number (5644615441).

Almost surely, 2^11289230881 is an apocalyptic number.

It is an amenable number.

11289230881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11289230881 is an equidigital number, since it uses as much as digits as its factorization.

11289230881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 11289230881 in words is "eleven billion, two hundred eighty-nine million, two hundred thirty thousand, eight hundred eighty-one".