Math-related phobias

cardinophobia

Cardinophobia is the fear of cardinal numbers, which are natural numbers used in counting and ordering.

Fear of cardinal numbers

Number phobias

Moderate

centumgigaphobia

Fear of the number 100,000,000,000.

Fear of 100,000,000,000

Moderate

googolphobia

Fear of the number googol, which is equal to 10 raised to the power of 100.

Fear of the number googol

Moderate

heftakosioitessarakontaheptaphobia

Heftakosioitessarakontaheptaphobia is the irrational fear of the number 747.

Fear of 747

Number phobias

Moderate

illionophobia

Illionophobia is the fear of numbers ending in -illion.

Fear of numbers ending in -illion

Moderate

megaphobia

Megaphobia is an irrational fear of the number 1,000,000.

Fear of the number 1,000,000

Specific number phobias

Moderate

ordinophobia

Ordinophobia is the fear of ordinal numbers, specifically the fear or discomfort associated with the order or rank of numbers.

Fear of ordinal numbers

Moderate