1101111101091 has 40 divisors (see below), whose sum is σ = 1647419034624. Its totient is φ = 732937241520.

The previous prime is 1101111101089. The next prime is 1101111101099. The reversal of 1101111101091 is 1901011111011.

It is not a de Polignac number, because 1101111101091 - 2¹ = 1101111101089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101111101099) 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 in 39 ways as a sum of consecutive naturals, for example, 289535596 + ... + 289539398.

Almost surely, 2^{1101111101091} is an apocalyptic number.

1101111101091 is a deficient number, since it is larger than the sum of its proper divisors (546307933533).

1101111101091 is an equidigital number, since it uses as much as digits as its factorization.

1101111101091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 18.

The spelling of 1101111101091 in words is "one trillion, one hundred one billion, one hundred eleven million, one hundred one thousand, ninety-one".