Hulk is #1 in strenght department, don't care what dc fanboys think
(strenght feat from Planet Hulk)
Estimate figures lean towards the conservative side. Hulk feat may actually be greater. But here's what I've come up with.
I'm thinking the 12,150 equatorial diameter is in kilometers rather than miles. Which would convert to 7550 miles which is slightly smaller than Earth (7926 miles).
The Earth weighs approximately 5.972 sextillion tons. Sakaar would weigh approximately 5.7 sextillion tons.
The Layers of the planet are:
Crust. Upper Mantle. Mantle. Outer Core. Inner Core.
The upper crust is "typically 25 miles thick". And on earth there are 7 MAJOR tectonic plates. Let's assume the Crust of a planet weighs an 8th of the total weight of a planet. And that the Plates equal 1/5 the weight of the Upper crust. And then assuming each Major plate is equal in weight.
Giving Sakaar 10 Major plates (3 more than earth). Each plate would represent 14.24 quintillion tons. So holding the 2 together would equal 28.48 quintillion tons.
I think this is the basement amount feat that Hulk performed. Again, it could be even greater.