11101001011091 has 2 divisors, whose sum is σ = 11101001011092. Its totient is φ = 11101001011090.

The previous prime is 11101001011063. The next prime is 11101001011123. The reversal of 11101001011091 is 19011010010111.

11101001011091 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 11101001011091 - 2³⁰ = 11099927269267 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101001011021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550500505545 + 5550500505546.

It is an arithmetic number, because the mean of its divisors is an integer number (5550500505546).

Almost surely, 2^{11101001011091} is an apocalyptic number.

11101001011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101001011091 is an equidigital number, since it uses as much as digits as its factorization.

11101001011091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 11101001011091 in words is "eleven trillion, one hundred one billion, one million, eleven thousand, ninety-one".