11100021091 has 2 divisors, whose sum is σ = 11100021092. Its totient is φ = 11100021090.

The previous prime is 11100021073. The next prime is 11100021137. The reversal of 11100021091 is 19012000111.

11100021091 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 a cyclic number.

It is not a de Polignac number, because 11100021091 - 2¹¹ = 11100019043 is a prime.

It is not a weakly prime, because it can be changed into another prime (11100021011) 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, 5550010545 + 5550010546.

It is an arithmetic number, because the mean of its divisors is an integer number (5550010546).

Almost surely, 2^11100021091 is an apocalyptic number.

11100021091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100021091 is an equidigital number, since it uses as much as digits as its factorization.

11100021091 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 16.

The spelling of 11100021091 in words is "eleven billion, one hundred million, twenty-one thousand, ninety-one".