112001009999 has 4 divisors (see below), whose sum is σ = 112003550064. Its totient is φ = 111998469936.

The previous prime is 112001009983. The next prime is 112001010001. The reversal of 112001009999 is 999900100211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999900100211 = 75277 ⋅13282943.

It is a cyclic number.

It is not a de Polignac number, because 112001009999 - 2⁴ = 112001009983 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 (112001009899) 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, 1202702 + ... + 1292475.

It is an arithmetic number, because the mean of its divisors is an integer number (28000887516).

Almost surely, 2^112001009999 is an apocalyptic number.

112001009999 is a deficient number, since it is larger than the sum of its proper divisors (2540065).

112001009999 is an equidigital number, since it uses as much as digits as its factorization.

112001009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540064.

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 112001009999 in words is "one hundred twelve billion, one million, nine thousand, nine hundred ninety-nine".