Aizen should have a few abilities
Passive Telekinesis (Was able to suspend rocks in the air)
Passive Existence Erasure (Aizen’s Reiatsu is stated that anything that comes in contact with him will cease to exist)
And since Ichigo also has Transcendent Reiatsu he should have this as well including a resistence to it due to the fact that he was able to physically grab Aizen which wouldn’t happen if he wasn’t resistant because otherwise he would’ve been welp “erased” obviously.
The reason Ichigo should have this ability as well since the ability itself derives the fact that Aizen has “Transcendental Reiatsu”
And since Ichigo is more transcendent than that version of Aizen, Ichigo should have this as well