11100121187 has 2 divisors, whose sum is σ = 11100121188. Its totient is φ = 11100121186.

The previous prime is 11100121129. The next prime is 11100121211. The reversal of 11100121187 is 78112100111.

11100121187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78112100111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11100121187 - 2⁸ = 11100120931 is a prime.

It is not a weakly prime, because it can be changed into another prime (11100121387) 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, 5550060593 + 5550060594.

It is an arithmetic number, because the mean of its divisors is an integer number (5550060594).

Almost surely, 2^11100121187 is an apocalyptic number.

11100121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100121187 is an equidigital number, since it uses as much as digits as its factorization.

11100121187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 23.

Adding to 11100121187 its reverse (78112100111), we get a palindrome (89212221298).

The spelling of 11100121187 in words is "eleven billion, one hundred million, one hundred twenty-one thousand, one hundred eighty-seven".