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We study cosmological Lemaitre-Tolman-Bondi (LTB) black hole thermodynamicsimmersed in a quintom universe. We investigate some thermodynamic aspects ofsuch a black hole in detail. We apply two methods of treating particles'tunneling from the apparent horizons and calculate the black hole's temperaturein each method; the results of which are the same. In addition, by consideringspecific time slices in cosmic history, we study the thermodynamic features ofthis black hole in these specific cosmic epochs. Also, we discuss theinformation loss problem and the remnant content of the cosmological black holein different cosmic epochs in this context. We show that approximately in allcosmic history, the temperature of the black hole's apparent horizon is morethan the temperature of the cosmological apparent horizon.

Cosmological LTB Black Hole in a Quintom Universe