0o22100

0o22100 is an octal literal used in programming to denote an integer value in base-8. The prefix 0o signals octal notation in several modern languages, notably Python 3, JavaScript (ECMAScript 2015 and later), and PHP. The digits that follow—2, 2, 1, 0, and 0—are valid octal digits (0 through 7). When evaluated, 0o22100 equals decimal 9280, which is 0x2440 in hexadecimal.

In computing, octal literals are commonly used to express bit patterns or permissions in a compact form. However, 0o22100 is not a conventional UNIX permission value; typical permission masks such as 0o755 or 0o644 encode user, group, and other permissions. More generally, 0o22100 can be interpreted as a bitmask or constant in a program, depending on how its bits map to flags or fields within that software.

Notes: languages differ in how octal literals are written. Python and modern JavaScript use the 0o prefix, while older C- and C-derived languages often indicate octal values with a leading 0 (for example, 022100). As with all base-8 literals, digits must be 0 through 7, and the value can be converted to other bases (decimal 9280 or hexadecimal 0x2440) as needed.