I have an EIN for my Sole Prop consulting business, and no LLC. They are orthogonal concepts.
It’s really easy to get an EIN online without forming an LLC. This is sufficient for any sole proprietor business where you don’t need liability protection or employees.
"If you are a sole proprietor and you have an EIN, you may enter either your SSN or EIN.
If you are a single-member LLC that is disregarded as an entity separate from its owner, enter the owner’s SSN (or EIN, if the owner has one). If the LLC is classified as a corporation or partnership, enter the entity’s EIN" [0]