This domain combines "giant" with "ICO", which could signify either a giant ICO (Initial Coin Offering) or a fun play on the word "giant", suitable for anything large.
The word "giantico" contains eight characters and four syllables. Successful brands using four syllable names include Unilever, ESPN and Coca-Cola.
Giantico.com is a .com domain. Dot com domains are the most desirable top-level-domain in the world, famously used by websites like twitter.com. Once you own a .com, it will be much easier to rank for your own name in Google.