I do not know how many missiles (R-36) are in a state of alert .But what I can guess from the aggressive statements coming from Kremlin that
they have already produced fully tested obj 4202 in large quantities may be 4-6 dozens of them.
By the beginning of 2017 or early next year Russia might have fully deployed these warheads in R-36 missiles which are in Combat readiness state.
The recent test was a kind of advertisement for the deployment of these warheads into already deployed /remaining R-36 missiles.The kremlin showcasing this test as a success meant that it is quickly going to replace the old warheads with these new ones in the combat ready missiles.
Altogether I am not sure how many combat ready silos russia is preparing/already prepared (Orenburg) for R-36. That would give us the hint for deployment scenario for 4202 warheads.