11100421187 has 2 divisors, whose sum is σ = 11100421188. Its totient is φ = 11100421186.

The previous prime is 11100421183. The next prime is 11100421249. The reversal of 11100421187 is 78112400111.

11100421187 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 is an emirp because it is prime and its reverse (78112400111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11100421187 - 2² = 11100421183 is a prime.

It is not a weakly prime, because it can be changed into another prime (11100421183) 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, 5550210593 + 5550210594.

It is an arithmetic number, because the mean of its divisors is an integer number (5550210594).

Almost surely, 2^11100421187 is an apocalyptic number.

11100421187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100421187 is an equidigital number, since it uses as much as digits as its factorization.

11100421187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 11100421187 its reverse (78112400111), we get a palindrome (89212821298).

The spelling of 11100421187 in words is "eleven billion, one hundred million, four hundred twenty-one thousand, one hundred eighty-seven".