2021322120 has 64 divisors (see below), whose sum is σ = 6070896000. Its totient is φ = 538403328.

The previous prime is 2021322103. The next prime is 2021322131. The reversal of 2021322120 is 212231202.

It is a happy number.

It is a super-2 number, since 2×2021322120² = 8171486225602588800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2021322120.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 101116 + ... + 119444.

It is an arithmetic number, because the mean of its divisors is an integer number (94857750).

Almost surely, 2^2021322120 is an apocalyptic number.

2021322120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021322120 is an abundant number, since it is smaller than the sum of its proper divisors (4049573880).

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

2021322120 is a wasteful number, since it uses less digits than its factorization.

2021322120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19262 (or 19258 counting only the distinct ones).

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

The square root of 2021322120 is about 44959.1160945141. The cubic root of 2021322120 is about 1264.3825969541.

Adding to 2021322120 its reverse (212231202), we get a palindrome (2233553322).

The spelling of 2021322120 in words is "two billion, twenty-one million, three hundred twenty-two thousand, one hundred twenty".