1111000011091 has 2 divisors, whose sum is σ = 1111000011092. Its totient is φ = 1111000011090.

The previous prime is 1111000011089. The next prime is 1111000011101. The reversal of 1111000011091 is 1901100001111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111000011091 - 2¹ = 1111000011089 is a prime.

Together with 1111000011089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1111000011001) 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, 555500005545 + 555500005546.

It is an arithmetic number, because the mean of its divisors is an integer number (555500005546).

Almost surely, 2^{1111000011091} is an apocalyptic number.

1111000011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111000011091 is an equidigital number, since it uses as much as digits as its factorization.

1111000011091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 1111000011091 in words is "one trillion, one hundred eleven billion, eleven thousand, ninety-one".