Oh I might be misunderstanding.
There are actually two totals in the lower left. They are both growing (fast) but the total at the moment is:
12,620 / 108,000
That might be 12,000 viewers, 108,000. Whatever it’s growing quickly.
I don’t know what the second number is, but he told a woman speaking to him (not on camera) that she should be aware that he was streaming to 13,000 people. (And then she hushed up a little.)