Can you find out which number multiplied by itself will give the output as 12345678987654321?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?