11110001001091 has 2 divisors, whose sum is σ = 11110001001092. Its totient is φ = 11110001001090.

The previous prime is 11110001001089. The next prime is 11110001001107. The reversal of 11110001001091 is 19010010001111.

11110001001091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11110001001107) can be obtained adding 11110001001091 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11110001001091 - 2¹ = 11110001001089 is a prime.

Together with 11110001001089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11110001001991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555000500545 + 5555000500546.

It is an arithmetic number, because the mean of its divisors is an integer number (5555000500546).

Almost surely, 2^{11110001001091} is an apocalyptic number.

11110001001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110001001091 is an equidigital number, since it uses as much as digits as its factorization.

11110001001091 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 16.

The spelling of 11110001001091 in words is "eleven trillion, one hundred ten billion, one million, one thousand, ninety-one".