12013134112 has 96 divisors (see below), whose sum is σ = 27474370560. Its totient is φ = 5064111360.

The previous prime is 12013133983. The next prime is 12013134139. The reversal of 12013134112 is 21143131021.

It is a self number, because there is not a number n which added to its sum of digits gives 12013134112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11561689 + ... + 11562727.

It is an arithmetic number, because the mean of its divisors is an integer number (286191360).

Almost surely, 2^12013134112 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 12013134112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13737185280).

12013134112 is an abundant number, since it is smaller than the sum of its proper divisors (15461236448).

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

12013134112 is a wasteful number, since it uses less digits than its factorization.

12013134112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12013134112 its reverse (21143131021), we get a palindrome (33156265133).

It can be divided in two parts, 1201 and 3134112, that added together give a palindrome (3135313).

The spelling of 12013134112 in words is "twelve billion, thirteen million, one hundred thirty-four thousand, one hundred twelve".