138221
Everything about the number 138221 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 138221
| Nominal | 138221 |
| Cardinal | one hundred thirty-eight thousand two hundred twenty-one |
| Ordinal | 138,221st |
| This number as US currency | one hundred thirty-eight thousand two hundred twenty-one dollars |
Properties (and some facts) of 138221
| Is 138221 an odd number? | 138221 is an odd number |
| Is 138221 an even number? | 138221 is not an even number |
| Is 138221 a palindrome? | 138221 is not a palindrome |
| Is 138221 a triangle number? | 138221 is not a triangle number |
138221 in other bases
| Base 2 (Binary) | 100001101111101101 |
| Base 3 (Ternary) | 21000121022 |
| Base 4 (Quaternary) | 201233231 |
| Base 5 (Quinary) | 13410341 |
| Base 6 (Senary) | 2543525 |
| Base 8 (Octal) | 415755 |
| Base 12 (Duodecimal) | 67BA5 |
| Base 16 (Hexadecimal) | 21BED |
| Base 20 (Vigesimal) | H5B1 |
Primes and factors tests for 138221
| Is 138221 a prime number? | 138221 is not a prime number |
| Is 138221 a perfect number? | 138221 is not a perfect number |
| Is 138221 a Mersenne prime? | 138221 is not a Mersenne prime |
| Is 138221 a Fermat prime? | 138221 is not a Fermat prime |
| Is 138221 a Fibonacci prime? | 138221 is not a Fibonacci prime |
| Is 138221 a partition prime? | 138221 is not a partition prime |
| Is 138221 a Pell prime? | 138221 is not a Pell prime |
| Prime Factors | Prime factors of 138221 |
138221 in other numeral systems
| 138221 in Roman numerals | CXXXVMMMCCXXI |
| 138221 in Chinese numerals | 壹拾萬叄萬捌仟貳佰貳拾壹 |
| 138221 in Babylonian numerals |    |
| 138221 in Egyptian numerals | 𓆐𓂯𓇃𓍣𓎇𓏺 |
Roots and squares for 138221
| Is 138221 a square number? | 138221 is not a square number |
| Is 138221 a cube number? | 138221 is not a cube number |
| Square root of 138221 | 371.78084942611 |
| Cube root of 138221 | 51.704063571493 |
Recreational math for 138221
| Number 138221 reversed | 122831 |
| Sum of the digits | 17 |
| Number of digits | 6 |