2112019999 has 4 divisors (see below), whose sum is σ = 2115443664. Its totient is φ = 2108596336.

The previous prime is 2112019981. The next prime is 2112020077. The reversal of 2112019999 is 9999102112.

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 2112019999 - 2⁹ = 2112019487 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 (2112019969) 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, 1710907 + ... + 1712140.

It is an arithmetic number, because the mean of its divisors is an integer number (528860916).

Almost surely, 2^2112019999 is an apocalyptic number.

2112019999 is a deficient number, since it is larger than the sum of its proper divisors (3423665).

2112019999 is an equidigital number, since it uses as much as digits as its factorization.

2112019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423664.

The product of its (nonzero) digits is 26244, while the sum is 43.

The square root of 2112019999 is about 45956.7187579792. The cubic root of 2112019999 is about 1283.0177817001.

The spelling of 2112019999 in words is "two billion, one hundred twelve million, nineteen thousand, nine hundred ninety-nine".