A number phobia is an illlogical fear of a certain number such as Triskaidekaphobia (fear of the number 13).
the phobia of the number thirteen is triscadecaphobia
Sigmund Freud phobia Sourse Rafael G
Triskadekaphobia.
unusphobia.
Triskadekophobia.
Numerophobia
Your question asks what the phobia of a fear is (X-phobia-phobia): the PHOBIA OF THE FEAR of the number eight would be octophobia-phobia. The fear of the number eight would simply be octophobia.
the fear of the number thirteen is tridecaphobia
Yes, there is an officially recognised phobia of the number 666.The name of this phobia is Hexakosioihexekontahexaphobia.Good luck trying to spell it without looking it up.
Where The Heart Is.
The fear of the number 21 is known as "victrionophobia."
The fear is called Triskaphobia. Similarly, the fear of the number 13 is called Triskadekaphobia.