  We study the production of multi-charmed hadrons by recombination in heavy
ion collisions by focusing on the production of $\Xi_{cc}$, $\Xi_{cc}^*$,
$\Omega_{scc}$, $\Omega_{scc}^*$, $\Omega_{ccc}$ baryons and X(3872) mesons.
Starting from the estimation of yields for those hadrons at chemical freeze-out
in both the statistical and coalescence model, we evaluate their transverse
momentum distributions at mid-rapidity in the coalescence model. We show that
yields of multi-charmed hadrons in heavy ion collisions at RHIC and LHC are
large enough, and thereby not only multi-charmed hadrons observed so far, e.g.,
the $\Xi_{cc}$ but also those which have not been observed yet, can be
discovered sufficiently in heavy ion collisions. We also find that the
transverse momentum distribution ratio between various multi-charmed hadrons
sensitively reflects the interplay between quark contents of corresponding
hadrons as well as the transverse momentum distribution of charm quarks at the
hadronization point, and therefore we insist that studying both the transverse
momentum distributions of multi-charmed hadrons themselves and transverse
momentum distribution ratios between various multi-charmed hadrons provide us
with useful information on hadron production mechanism involving charm quarks
in heavy ion collisions.
