1112121110999 has 4 divisors (see below), whose sum is σ = 1114554636864. Its totient is φ = 1109687585136.

The previous prime is 1112121110941. The next prime is 1112121111071. The reversal of 1112121110999 is 9990111212111.

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 1112121110999 - 2⁸ = 1112121110743 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 (1112121110099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1216762247 + ... + 1216763160.

It is an arithmetic number, because the mean of its divisors is an integer number (278638659216).

Almost surely, 2^{1112121110999} is an apocalyptic number.

1112121110999 is a deficient number, since it is larger than the sum of its proper divisors (2433525865).

1112121110999 is an equidigital number, since it uses as much as digits as its factorization.

1112121110999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433525864.

The product of its (nonzero) digits is 2916, while the sum is 38.

The spelling of 1112121110999 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, nine hundred ninety-nine".