Searching for integrated lithium cell charger, battery monitor, step-up regulator

I have an application where I need to rely on a 3.6v lithium-ion battery cell for power. I am looking for an integrated 1-chip solution to simplify my design with the following components:

• a smart battery charger to charge my 3.6v lithium cell from a DC input of 12-volts. * a battery monitor that will allow a microprocessor to guage battery charge level. As an example:
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  * a DC-DC step-up converter that will step up the 3.6 volt output to

additional question: can I paralell two lithium-ion battery cells for extra capacity off the same charge circuit?

Thanks