10111213

10111213 is commonly understood as the concatenation of four consecutive integers: 10, 11, 12, and 13. As a numeric string, it has eight digits and appears in contexts such as puzzles, programming examples, or datasets where digits are treated without delimiters. It is not a formal mathematical object with a specialized name, but it serves as a simple illustration of digit concatenation and of sequences of consecutive integers.

If interpreted as a list of four integers, the sequence consists of 10, 11, 12, and 13. The terms have a common difference of 1; their sum is 46; the average is 11.5; and the product is 10 × 11 × 12 × 13 = 17,160. The eight-digit concatenation 10111213 raises questions about parsing: some problems break it into 10-11-12-13; others treat it as a single identifier or code.

In computing and data representation, such strings are used to test parsing routines, regular expressions, or input validation. In date- or time-related contexts, the sequence 10–11–12–13 might be interpreted informally as consecutive days, months, or as a mnemonic for a set of dates, depending on regional formatting. However, without separators, the intended grouping is context-dependent.

Overall, 10111213 is best described as a compact string formed from four consecutive integers, rather than as a standalone mathematical concept. It illustrates common issues in data encoding and sequence interpretation.