2021021022 has 16 divisors (see below), whose sum is σ = 4064375952. Its totient is φ = 669951360.

The previous prime is 2021021021. The next prime is 2021021039. The reversal of 2021021022 is 2201201202.

It is a junction number, because it is equal to n+sod(n) for n = 2021020989 and 2021021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929403 + ... + 931574.

It is an arithmetic number, because the mean of its divisors is an integer number (254023497).

Almost surely, 2^2021021022 is an apocalyptic number.

2021021022 is an abundant number, since it is smaller than the sum of its proper divisors (2043354930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021021022 is a wasteful number, since it uses less digits than its factorization.

2021021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861163.

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

The square root of 2021021022 is about 44955.7673941843. The cubic root of 2021021022 is about 1264.3198126388.

Adding to 2021021022 its reverse (2201201202), we get a palindrome (4222222224).

The spelling of 2021021022 in words is "two billion, twenty-one million, twenty-one thousand, twenty-two".