11101120109 has 2 divisors, whose sum is σ = 11101120110. Its totient is φ = 11101120108.

The previous prime is 11101120097. The next prime is 11101120111. The reversal of 11101120109 is 90102110111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10894766884 + 206353225 = 104378^2 + 14365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101120109 is a prime.

Together with 11101120111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101120409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550560054 + 5550560055.

It is an arithmetic number, because the mean of its divisors is an integer number (5550560055).

Almost surely, 2^11101120109 is an apocalyptic number.

It is an amenable number.

11101120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101120109 is an equidigital number, since it uses as much as digits as its factorization.

11101120109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 11101120109 in words is "eleven billion, one hundred one million, one hundred twenty thousand, one hundred nine".