1120111999 has 4 divisors (see below), whose sum is σ = 1120429240. Its totient is φ = 1119794760.

The previous prime is 1120111981. The next prime is 1120112009. The reversal of 1120111999 is 9991110211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9991110211 = 47 ⋅212576813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120111999 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 (1120111939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153264 + ... + 160405.

It is an arithmetic number, because the mean of its divisors is an integer number (280107310).

Almost surely, 2^1120111999 is an apocalyptic number.

1120111999 is a deficient number, since it is larger than the sum of its proper divisors (317241).

1120111999 is an equidigital number, since it uses as much as digits as its factorization.

1120111999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317240.

The product of its (nonzero) digits is 1458, while the sum is 34.

The square root of 1120111999 is about 33468.0743246456. The cubic root of 1120111999 is about 1038.5334355347.

The spelling of 1120111999 in words is "one billion, one hundred twenty million, one hundred eleven thousand, nine hundred ninety-nine".