2022021021 has 32 divisors (see below), whose sum is σ = 3017779200. Its totient is φ = 1196778240.

The previous prime is 2022021013. The next prime is 2022021077. The reversal of 2022021021 is 1201202202.

It is not a de Polignac number, because 2022021021 - 2³ = 2022021013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2022020988 and 2022021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022021721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227226 + ... + 235956.

It is an arithmetic number, because the mean of its divisors is an integer number (94305600).

Almost surely, 2^2022021021 is an apocalyptic number.

It is an amenable number.

2022021021 is a deficient number, since it is larger than the sum of its proper divisors (995758179).

2022021021 is a wasteful number, since it uses less digits than its factorization.

2022021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2022021021 is about 44966.8880510982. Note that the first 3 decimals coincide. The cubic root of 2022021021 is about 1264.5283062770.

Adding to 2022021021 its reverse (1201202202), we get a palindrome (3223223223).

The spelling of 2022021021 in words is "two billion, twenty-two million, twenty-one thousand, twenty-one".