Meitnerium Ionization Energy

The Meitnerium Ionization Energy is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Meitnerium.
Mt -> Mt⁺ + e^-
This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Meitnerium is:
Mt^N+ -> Mt^(N+1)+ + e^-

There is no data about Meitnerium ionization energy