2021320122 has 16 divisors (see below), whose sum is σ = 4043178720. Its totient is φ = 673683632.

The previous prime is 2021320099. The next prime is 2021320123. The reversal of 2021320122 is 2210231202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2021320123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39529 + ... + 74867.

It is an arithmetic number, because the mean of its divisors is an integer number (252698670).

Almost surely, 2^2021320122 is an apocalyptic number.

2021320122 is an abundant number, since it is smaller than the sum of its proper divisors (2021858598).

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

2021320122 is a wasteful number, since it uses less digits than its factorization.

2021320122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44877.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2021320122 is about 44959.0938743209. The cubic root of 2021320122 is about 1264.3821803559.

Adding to 2021320122 its reverse (2210231202), we get a palindrome (4231551324).

The spelling of 2021320122 in words is "two billion, twenty-one million, three hundred twenty thousand, one hundred twenty-two".