2021133230320 has 80 divisors (see below), whose sum is σ = 4906259550720. Its totient is φ = 772859273472.

The previous prime is 2021133230273. The next prime is 2021133230329. The reversal of 2021133230320 is 230323311202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2021133230291 and 2021133230300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021133230329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2900101 + ... + 3528859.

It is an arithmetic number, because the mean of its divisors is an integer number (61328244384).

Almost surely, 2^{2021133230320} is an apocalyptic number.

2021133230320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021133230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2453129775360).

2021133230320 is an abundant number, since it is smaller than the sum of its proper divisors (2885126320400).

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

2021133230320 is a wasteful number, since it uses less digits than its factorization.

2021133230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630542 (or 630536 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 2021133230320 its reverse (230323311202), we get a palindrome (2251456541522).

The spelling of 2021133230320 in words is "two trillion, twenty-one billion, one hundred thirty-three million, two hundred thirty thousand, three hundred twenty".