12001300000 has 144 divisors (see below), whose sum is σ = 30230190144. Its totient is φ = 4687200000.

The previous prime is 12001299977. The next prime is 12001300039. The reversal of 12001300000 is 310021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4298605 + ... + 4301395.

It is an arithmetic number, because the mean of its divisors is an integer number (209931876).

Almost surely, 2^12001300000 is an apocalyptic number.

12001300000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15115095072).

12001300000 is an abundant number, since it is smaller than the sum of its proper divisors (18228890144).

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

12001300000 is an frugal number, since it uses more digits than its factorization.

12001300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 12001300000 its reverse (310021), we get a palindrome (12001610021).

The spelling of 12001300000 in words is "twelve billion, one million, three hundred thousand".