If x0=1,x1=2x_0 = 1, x_1 = 2x0=1,x1=2, and xn+2=1+xn+1xn,n=0,1,2,3,......,x_{n + 2} = \frac{1 + x_{n + 1}}{x_n}, n = 0, 1, 2, 3, ......,xn+2=xn1+xn+1,n=0,1,2,3,......, then x2021x_{2021}x2021 is equal to
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