What is the best strategy to survive against mass teaming on Agar.io FFA?

More than once, as I was playing Agar.io (desktop), in the FFA game mode, I starded out well, quickly rose to the top of the leaderboard, and maintained it for a long period of time, only to eventually get teamed against by many of the other leaderboard players.

Here's an example:

I was playing as "【ƤVŦ】㊴ Ŧřŏĵăň" ('[PVT] 39 Trojan'), and I went to the top of the leaderboard in less than 3 minutes. After about 45 minutes of leading at #1/#2, I started seeing names like 'Kill Trojan', 'Perverttrjdies', and 'killperverttroja'. And many others wanted to help them. It was eventually me fighting everyone.

Here was my strategy: Stay away from viruses, not splitting unless one of my halfs would at least total my entire prior mass {to avoid other players splitting for the bigger half after consuming the smaller one). I also avoided corners, where even smaller people could eat me, because of teaming. I peaked at a little over 11k mass, and was soon after bust 3 times by viruses. I eventually gave all my mass to a tiny player, and left.

Are there any better strategies to take advantage of the teamed efforts of other players, to grow in mass and maintain a leaderboard giant status? I did not have a teamate, so fast regrouping was impossible.