system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] It is said that Brainiac has a 12th level of intelligence, what should I imagine under this term?

What can he do with such high intelligence?
gpt
He’s basically maxed out any quantifiable aspect of intelligence. Can perform complicated mathematical operations in his head instantly. Near infinite knowledge storage. Analysis on multiple concurrent data streams. Photographic memory with perfect recall. Perfect deductive, inductive, and abductive reasoning. 

Basically if it’s an aspect of intelligence that can reasonably be measured, he’s maxed it out.

Of course not all of intelligence can be properly quantified and this is where he’s 12th level intellect falls short. 

Both Superman and Lex have pointed out that while he’s basically the ultimate living computer, he lacks imagination. 

A relatively less intelligent being like Lex or Superman can’t quite reach him in terms of raw intelligence, but can outdo him in pure insight, imagination, and creativity.