This contemporary and modern name is ideally suited to a finance, payment or cryptocurrency company.
The name "accountium" has 10 characters and four syllables. Four syllable names are used by established brands like Airbnb, Panasonic and ESPN.
Accountium.com is a .com domain. Dot com domains are the most valued top-level-domain in the world, famously used by websites like youtube.com. Owning a .com says that you own the word "accountium" online.