Retirement tax questions

Thank you so much for  your response. If the account balance (i.e. contract value) is zero, then the actuarial value of the rider will always be less than 120% of the account balance. At that time, if there isn't any required RMD for this annuity, can I use the ongoing yearly lifetime rider distributions to "cover" the RMD of my other IRA's (CD's)? If there's no RMD, will I continue to receive a 1099-R for this IRA rider distribution?  

I have not or plan to annuitize this. My distributions are from the lifetime income rider. I know the insurance company will do this calculation for me. I also know that it will probably be about 10 years from now when the contract value will be close to zero. I've been taking distributions for 10 years and the current contract value is about  50% of the protected payment base. Although I don't know what the market will do, the contract balance decreases every year. The total contract value is no longer large enough to grow anywhere near the yearly reder distributions.

Hope you can follow my questions. Thanks again for your help.