The Number
221990
Two Hundred and Twenty-One Thousand Nine Hundred and Ninety
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
2.21990e5
Reciprocal
A number multiplied with its reciprocal is one.
0.00000450470741925312
The reciprocal of 221990.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 221990 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Two hundred and twenty-one thousand nine hundred and ninety is a composite number with 16 total factors (including 1 and itself). See primes in Base 10 Decimal
A Composite
Composites have more than just these two factors.
Two hundred and twenty-one thousand nine hundred and ninety is a composite number with 16 total factors (including 1 and itself).
Prime Factors
The number two hundred and twenty-one thousand nine hundred and ninety has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
21
·
51
·
791
·
2811
= 221990
Base Conversions
The number two hundred and twenty-one thousand nine hundred and ninety in 35 different bases