1191109120003 has 4 divisors (see below), whose sum is σ = 1299391767288. Its totient is φ = 1082826472720.

The previous prime is 1191109119931. The next prime is 1191109120021. The reversal of 1191109120003 is 3000219011911.

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 1191109120003 - 2²¹ = 1191107022851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191109120043) 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, 54141323626 + ... + 54141323647.

It is an arithmetic number, because the mean of its divisors is an integer number (324847941822).

Almost surely, 2^{1191109120003} is an apocalyptic number.

1191109120003 is a deficient number, since it is larger than the sum of its proper divisors (108282647285).

1191109120003 is a wasteful number, since it uses less digits than its factorization.

1191109120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108282647284.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 1191109120003 in words is "one trillion, one hundred ninety-one billion, one hundred nine million, one hundred twenty thousand, three".