What is an integer of a irrational number between 12 and 14?

There are no integers between 12 and 14, as integers are whole numbers without decimal or fractional parts. The integers surrounding that range are 12 and 13. However, there are many Irrational Numbers between 12 and 14, such as the square root of 150 (approximately 12.247) or π (pi) added to 12 (approximately 15.142).