12020312099 has 4 divisors (see below), whose sum is σ = 12039731640. Its totient is φ = 12000892560.

The previous prime is 12020312069. The next prime is 12020312131. The reversal of 12020312099 is 99021302021.

12020312099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99021302021 = 143593 ⋅689597.

It is a cyclic number.

It is not a de Polignac number, because 12020312099 - 2⁸ = 12020311843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020312039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9708842 + ... + 9710079.

It is an arithmetic number, because the mean of its divisors is an integer number (3009932910).

Almost surely, 2^12020312099 is an apocalyptic number.

12020312099 is a deficient number, since it is larger than the sum of its proper divisors (19419541).

12020312099 is an equidigital number, since it uses as much as digits as its factorization.

12020312099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19419540.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 12020312099 in words is "twelve billion, twenty million, three hundred twelve thousand, ninety-nine".