0o21066

0o21066 is an octal integer literal. The prefix 0o indicates base-8 notation in several programming languages such as Python 3 and JavaScript (ECMAScript 2015 and later). When interpreted as an octal number, the digits 21066 represent the decimal value 8758. In hexadecimal this value is 0x2236, and in binary it is 0b10001000110110 (without leading zeros).

In Python 3, writing 0o21066 yields the integer 8758. Other languages that support 0o-style octal literals include JavaScript and Ruby. In C and C++, octal literals are written with a leading zero (for example, 021066), not with a 0o prefix; some shells and older language standards may follow similar conventions. Octal literals are commonly used when dealing with bitwise masks, permissions, or hardware-related constants.

As with any numeric literal, the interpretation of 0o21066 depends on context. In software that encodes permissions or file modes, octal values are often used to express bit patterns, but 0o21066 by itself does not specify a universal meaning without knowing the surrounding data structures or APIs. It is primarily notable as a concrete example of an octal representation that maps to the decimal value 8758.

See also: octal numeral system, 0o prefix, Python 3 literals, Unix file permissions and mode representations.