Is it legal for a Landlord take 12 months rent in advance?

[Jaganath Dabbi]

I own a single-property home in Delaware. I have a renter with a questionable credit history. As a safety net, the renter offered to pay 12 months' rent in advance along with a month's worth of security deposit.

1. Is this legal?

2. Does the 12-month rent have to be put in escrow?

Thanks