12099999984 has 160 divisors (see below), whose sum is σ = 32340072960. Its totient is φ = 3897163776.

The previous prime is 12099999983. The next prime is 12100000051. The reversal of 12099999984 is 48999999021.

12099999984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12099999984² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099999983) 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 31 ways as a sum of consecutive naturals, for example, 47081584 + ... + 47081840.

It is an arithmetic number, because the mean of its divisors is an integer number (202125456).

Almost surely, 2^12099999984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12099999984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16170036480).

12099999984 is an abundant number, since it is smaller than the sum of its proper divisors (20240072976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12099999984 is a wasteful number, since it uses less digits than its factorization.

12099999984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 34012224, while the sum is 69.

The spelling of 12099999984 in words is "twelve billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-four".