let's do some calc to see what happen...

Ic(T1)=(12/10,000)=1.2mA

Ib(T1)=(3/22,000)=0.136 mA

a Hfe minimum will be Ic/Ib = 8.8 to make this work. it's usual and recommended to multiply the minimum Hfe by 5 or 10. so here between 45 and 90 will be the minimum.

Looking at BC237 datasheet, Hfe min = 120, so it has to work.

And yes i forgot to add some extra load at first calc. But you get the idea.