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121! Factorial of 121

Value of 121! i.e, Factorial of 121 =
80942985252734437396
81622845449350829970
82306309701607045776
23362849766042664052
17133917739979101827
38287074185078904956
85666343931838274504
77162148411476507217
60223072092160000000
00000000000000000000
0



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 121! = 28
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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