1110191111091 has 12 divisors (see below), whose sum is σ = 1603675386768. Its totient is φ = 740096943984.

The previous prime is 1110191111083. The next prime is 1110191111101. The reversal of 1110191111091 is 1901111910111.

It is not a de Polignac number, because 1110191111091 - 2³ = 1110191111083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1110191111011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2306695 + ... + 2746128.

It is an arithmetic number, because the mean of its divisors is an integer number (133639615564).

Almost surely, 2^{1110191111091} is an apocalyptic number.

1110191111091 is a deficient number, since it is larger than the sum of its proper divisors (493484275677).

1110191111091 is a wasteful number, since it uses less digits than its factorization.

1110191111091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077242 (or 5077239 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 27.

The spelling of 1110191111091 in words is "one trillion, one hundred ten billion, one hundred ninety-one million, one hundred eleven thousand, ninety-one".