2021 is a very interesting number and therefore  a special year. It is a product of two  consecutive prime numbers 43 and 47.
Interestingly  it can be expressed as (a+b) x (a-b) as (45-2) x (45+2) Although, 2020 was a partner in crime, 2021 can be seen as partner in prime !
The number 2021 is both the concatenation of consecutive integers (20, 21) and the product of two consecutive primes (43×47). Further, multiplying (2021) by its reverse (1202)  is also a palindrome. (2021×1202=2429242).