  We propose a chaotic inflation model in which the lightest right-handed
sneutrino serves as the inflaton and the predicted values of the spectral index
and tensor-to-scalar ratio are consistent with the Planck data. Interestingly,
the observed magnitude of primordial density perturbations is naturally
explained by the inflaton mass of order $10^{13}$GeV, which is close to the
right-handed neutrino mass scale suggested by the seesaw mechanism and the
neutrino oscillation experiments. We find that the agreement of the two scales
becomes even better in the neutrino mass anarchy. We show that the inflation
model can be embedded into supergravity and discuss thermal history of the
Universe after inflation such as non-thermal leptogenesis by the right-handed
sneutrino decays and the modulus dynamics.
