1121111111199 has 4 divisors (see below), whose sum is σ = 1494814814936. Its totient is φ = 747407407464.

The previous prime is 1121111111167. The next prime is 1121111111201. The reversal of 1121111111199 is 9911111111211.

It is a happy number.

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

It is not a de Polignac number, because 1121111111199 - 2⁵ = 1121111111167 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 (1121111111299) 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, 186851851864 + ... + 186851851869.

It is an arithmetic number, because the mean of its divisors is an integer number (373703703734).

Almost surely, 2^{1121111111199} is an apocalyptic number.

1121111111199 is a deficient number, since it is larger than the sum of its proper divisors (373703703737).

1121111111199 is an equidigital number, since it uses as much as digits as its factorization.

1121111111199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373703703736.

The product of its digits is 162, while the sum is 30.

The spelling of 1121111111199 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, one hundred ninety-nine".