What to do with 20 millions?

Dear friends,

I have some money at the bank, about 20 m and I'd like to use it for investment rather than being devaluated by inflation.

There are some options:
1. Buy some stocks
2. Build a business
3. Invest in a robot that can do automated stock trading
4. Any idea???

I realized that money is just a number, if you don't use them.
Use it wisely and you'll be rich.
Use it poorly and you'll became, uhm, poor..