11121003191 has 4 divisors (see below), whose sum is σ = 11143653384. Its totient is φ = 11098353000.

The previous prime is 11121003167. The next prime is 11121003211. The reversal of 11121003191 is 19130012111.

It is a happy number.

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 11121003191 - 2²² = 11116808887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121023191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11324360 + ... + 11325341.

It is an arithmetic number, because the mean of its divisors is an integer number (2785913346).

Almost surely, 2^11121003191 is an apocalyptic number.

11121003191 is a deficient number, since it is larger than the sum of its proper divisors (22650193).

11121003191 is an equidigital number, since it uses as much as digits as its factorization.

11121003191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22650192.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 11121003191 in words is "eleven billion, one hundred twenty-one million, three thousand, one hundred ninety-one".