2021201313021 has 24 divisors (see below), whose sum is σ = 3185432140800. Its totient is φ = 1224774777600.

The previous prime is 2021201312993. The next prime is 2021201313031. The reversal of 2021201313021 is 1203131021202.

2021201313021 is a `hidden beast` number, since 20 + 212 + 0 + 131 + 302 + 1 = 666.

It is not a de Polignac number, because 2021201313021 - 2¹⁵ = 2021201280253 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021201312985 and 2021201313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021201313031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006996 + ... + 2248653.

It is an arithmetic number, because the mean of its divisors is an integer number (132726339200).

Almost surely, 2^{2021201313021} is an apocalyptic number.

It is an amenable number.

2021201313021 is a deficient number, since it is larger than the sum of its proper divisors (1164230827779).

2021201313021 is a wasteful number, since it uses less digits than its factorization.

2021201313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261937 (or 3261934 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2021201313021 its reverse (1203131021202), we get a palindrome (3224332334223).

The spelling of 2021201313021 in words is "two trillion, twenty-one billion, two hundred one million, three hundred thirteen thousand, twenty-one".