There is a useful website called International Numbering Plans.
They report "This telephone number is most likely a Nigeria number. Specific information on this number range is not available. This might mean that this particular telephone number does not exist."
At least they had a stab. I could not see that it matched any number format.
You say it is an international number and If you tell us which country you are in when receiving the call, perhaps someone might have better luck identifying it.