111120109999 has 4 divisors (see below), whose sum is σ = 114951837960. Its totient is φ = 107288382040.

The previous prime is 111120109993. The next prime is 111120110011. The reversal of 111120109999 is 999901021111.

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 111120109999 - 2⁹ = 111120109487 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 (111120109993) 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, 1915863937 + ... + 1915863994.

It is an arithmetic number, because the mean of its divisors is an integer number (28737959490).

Almost surely, 2^111120109999 is an apocalyptic number.

111120109999 is a deficient number, since it is larger than the sum of its proper divisors (3831727961).

111120109999 is an equidigital number, since it uses as much as digits as its factorization.

111120109999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831727960.

The product of its (nonzero) digits is 13122, while the sum is 43.

The spelling of 111120109999 in words is "one hundred eleven billion, one hundred twenty million, one hundred nine thousand, nine hundred ninety-nine".