Dodekacthulhum is a googolism coined by Douglas Shamlin Jr. equal to E100#{12}#100, or E100#^^^^^^^^^^^^#100.
Douglas Shamlin Jr. uploaded the name in a large number list video deleted then reuploaded by someone on youtube.
The number has an official name given by Sbiis Saibian, the goliath.
My dodekacthulhum regiment: it's right here