12008013312 has 80 divisors (see below), whose sum is σ = 32041342080. Its totient is φ = 3996260352.

The previous prime is 12008013307. The next prime is 12008013323. The reversal of 12008013312 is 21331080021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006293 + ... + 1018155.

It is an arithmetic number, because the mean of its divisors is an integer number (400516776).

Almost surely, 2^12008013312 is an apocalyptic number.

12008013312 is a gapful number since it is divisible by the number (12) 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 12008013312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16020671040).

12008013312 is an abundant number, since it is smaller than the sum of its proper divisors (20033328768).

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

12008013312 is an equidigital number, since it uses as much as digits as its factorization.

12008013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543 (or 12527 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12008013312 its reverse (21331080021), we get a palindrome (33339093333).

The spelling of 12008013312 in words is "twelve billion, eight million, thirteen thousand, three hundred twelve".