12120134312 has 64 divisors (see below), whose sum is σ = 27349479360. Its totient is φ = 4961318400.

The previous prime is 12120134293. The next prime is 12120134317. The reversal of 12120134312 is 21343102121.

It is not an unprimeable number, because it can be changed into a prime (12120134317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82298 + ... + 176105.

It is an arithmetic number, because the mean of its divisors is an integer number (427335615).

Almost surely, 2^12120134312 is an apocalyptic number.

It is an amenable number.

12120134312 is an abundant number, since it is smaller than the sum of its proper divisors (15229345048).

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

12120134312 is a wasteful number, since it uses less digits than its factorization.

12120134312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258474 (or 258470 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12120134312 its reverse (21343102121), we get a palindrome (33463236433).

The spelling of 12120134312 in words is "twelve billion, one hundred twenty million, one hundred thirty-four thousand, three hundred twelve".