2020021012321 has 8 divisors (see below), whose sum is σ = 2181862463144. Its totient is φ = 1859101735680.

The previous prime is 2020021012319. The next prime is 2020021012369. The reversal of 2020021012321 is 1232101200202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170312210721 + 1849708801600 = 412689^2 + 1360040^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020021012321 - 2¹ = 2020021012319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020021012295 and 2020021012304.

It is not an unprimeable number, because it can be changed into a prime (2020021012381) 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, 230538990 + ... + 230547751.

It is an arithmetic number, because the mean of its divisors is an integer number (272732807893).

Almost surely, 2^{2020021012321} is an apocalyptic number.

It is an amenable number.

2020021012321 is a deficient number, since it is larger than the sum of its proper divisors (161841450823).

2020021012321 is a wasteful number, since it uses less digits than its factorization.

2020021012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461087091.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2020021012321 its reverse (1232101200202), we get a palindrome (3252122212523).

The spelling of 2020021012321 in words is "two trillion, twenty billion, twenty-one million, twelve thousand, three hundred twenty-one".