112001009 has 4 divisors (see below), whose sum is σ = 113578560. Its totient is φ = 110423460.

The previous prime is 112000963. The next prime is 112001011. The reversal of 112001009 is 900100211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900100211 = 103 ⋅8738837.

It is not a de Polignac number, because 112001009 - 2²⁰ = 110952433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112000984 and 112001002.

It is not an unprimeable number, because it can be changed into a prime (112001039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788669 + ... + 788810.

It is an arithmetic number, because the mean of its divisors is an integer number (28394640).

Almost surely, 2^112001009 is an apocalyptic number.

It is an amenable number.

112001009 is a deficient number, since it is larger than the sum of its proper divisors (1577551).

112001009 is an equidigital number, since it uses as much as digits as its factorization.

112001009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577550.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 112001009 is about 10583.0529149202. The cubic root of 112001009 is about 482.0299003507.

The spelling of 112001009 in words is "one hundred twelve million, one thousand, nine".