1100011111091 has 4 divisors (see below), whose sum is σ = 1100029913472. Its totient is φ = 1099992308712.

The previous prime is 1100011111051. The next prime is 1100011111093. The reversal of 1100011111091 is 1901111100011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100011111091 - 2¹⁸ = 1100010848947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100011111093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9313160 + ... + 9430533.

It is an arithmetic number, because the mean of its divisors is an integer number (275007478368).

Almost surely, 2^{1100011111091} is an apocalyptic number.

1100011111091 is a deficient number, since it is larger than the sum of its proper divisors (18802381).

1100011111091 is an equidigital number, since it uses as much as digits as its factorization.

1100011111091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18802380.

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

The spelling of 1100011111091 in words is "one trillion, one hundred billion, eleven million, one hundred eleven thousand, ninety-one".