[10NL] 22...Flop a set...weird line from villain. What's his range?

[Cobra_1878]

Villain is unknown.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

SB: $10.93
BB: $9.05
UTG: $13.75
MP: $10.52
CO: $23.35
Hero (BTN): $10.00

SB posts SB $0.05, BB posts BB $0.10

Pre Flop: (pot: $0.15) Hero has 2 2

UTG raises to $0.30, fold, fold, Hero calls $0.30, fold, fold

Flop: ($0.75, 2 players) 9 2 K
UTG bets $0.40, Hero calls $0.40

Turn: ($1.55, 2 players) 5
UTG checks, Hero bets $0.85, UTG calls $0.85

River: ($3.25, 2 players) Q
UTG checks, Hero bets $2.30, UTG raises to $12.20 and is all-in, Hero ???


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Board: 9dKh2c5cQs
Equity Win Tie
MP2 75.68% 75.68% 0.00% { KK-QQ, 99, 55, KQs, JTs, KQo, JTo }
BU 24.32% 24.32% 0.00% { 2d2s }

I have 24% equity against the range I gave villain and I need to be good just under 1/3 of the time to be able to call, so it looks like a fold?

Is that ridiculous to fold here? His line just makes no sense, I don't know what to make of it.