12012112099 has 4 divisors (see below), whose sum is σ = 12936120736. Its totient is φ = 11088103464.

The previous prime is 12012112087. The next prime is 12012112117. The reversal of 12012112099 is 99021121021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99021121021 = 103 ⋅961370107.

It is a cyclic number.

It is not a de Polignac number, because 12012112099 - 2²³ = 12003723491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012112499) 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, 462004299 + ... + 462004324.

It is an arithmetic number, because the mean of its divisors is an integer number (3234030184).

Almost surely, 2^12012112099 is an apocalyptic number.

12012112099 is a deficient number, since it is larger than the sum of its proper divisors (924008637).

12012112099 is an equidigital number, since it uses as much as digits as its factorization.

12012112099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924008636.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 12012112099 in words is "twelve billion, twelve million, one hundred twelve thousand, ninety-nine".