112001999 has 4 divisors (see below), whose sum is σ = 112074336. Its totient is φ = 111929664.

The previous prime is 112001963. The next prime is 112002029. The reversal of 112001999 is 999100211.

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 112001999 - 2¹² = 111997903 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 (112001909) 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, 33794 + ... + 36959.

It is an arithmetic number, because the mean of its divisors is an integer number (28018584).

Almost surely, 2^112001999 is an apocalyptic number.

112001999 is a deficient number, since it is larger than the sum of its proper divisors (72337).

112001999 is an equidigital number, since it uses as much as digits as its factorization.

112001999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72336.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 112001999 is about 10583.0996877096. The cubic root of 112001999 is about 482.0313206004.

The spelling of 112001999 in words is "one hundred twelve million, one thousand, nine hundred ninety-nine".