0o11221

0o11221 is a numeric literal that uses octal notation, indicated by the prefix 0o. It appears in programming languages that support explicit octal literals, such as Python 3, JavaScript (ECMAScript 2015 and later), and Ruby.

In octal (base 8), the five digits 1, 1, 2, 2, 1 form the value 1×8^4 + 1×8^3 + 2×8^2 + 2×8^1 + 1×8^0, which equals 4096 + 512 + 128 + 16 + 1 = 4753 in decimal. In hexadecimal, this value is 0x1291. The binary representation is derived by converting each octal digit to three bits (001 001 010 010 001), yielding a 15-bit pattern.

Usage and context: In Python 3, evaluating 0o11221 yields the integer 4753. In JavaScript, 0o11221 is an octal literal usable wherever a number is expected. Octal notation is commonly used in computing to represent certain kinds of data, notably Unix file permissions (for example, 0755 or 0644), though these permissions are typically shown as five-digit octal numbers rather than with the 0o prefix in all contexts. Like all octal literals, its digits must be in the range 0 to 7; digits 8 or 9 would be invalid.

Overall, 0o11221 serves as a concrete example of an octal literal, illustrating how a base-8 value is written with a 0o prefix and how it maps to its decimal and hexadecimal equivalents.