I took out the anode. It was sealed with some blue colored paste sealant. Came out pretty easy. It does not have a second anode. The hot side is open below the nipple. The heat traps are a little flapper not the ball type.
I did measure the anode. Its 44″ x 7/8″ and is magnesium.
I reinstalled the anode with the blue Teflon tape. I hope is comes out this easy when its time for service.