12099871085 has 16 divisors (see below), whose sum is σ = 14599958400. Its totient is φ = 9626586816.

The previous prime is 12099871081. The next prime is 12099871109. The reversal of 12099871085 is 58017899021.

12099871085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12099871085 - 2² = 12099871081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099871081) 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 15 ways as a sum of consecutive naturals, for example, 1078736 + ... + 1089894.

It is an arithmetic number, because the mean of its divisors is an integer number (912497400).

Almost surely, 2^12099871085 is an apocalyptic number.

It is an amenable number.

12099871085 is a deficient number, since it is larger than the sum of its proper divisors (2500087315).

12099871085 is a wasteful number, since it uses less digits than its factorization.

12099871085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340.

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 12099871085 in words is "twelve billion, ninety-nine million, eight hundred seventy-one thousand, eighty-five".