202020323321 has 16 divisors (see below), whose sum is σ = 204644320128. Its totient is φ = 199409616000.

The previous prime is 202020323299. The next prime is 202020323333. The reversal of 202020323321 is 123323020202.

It is a cyclic number.

It is not a de Polignac number, because 202020323321 - 2¹⁴ = 202020306937 is a prime.

It is a super-2 number, since 2×202020323321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202020323293 and 202020323302.

It is not an unprimeable number, because it can be changed into a prime (202020323371) 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, 52703621 + ... + 52707453.

It is an arithmetic number, because the mean of its divisors is an integer number (12790270008).

Almost surely, 2^202020323321 is an apocalyptic number.

It is an amenable number.

202020323321 is a deficient number, since it is larger than the sum of its proper divisors (2623996807).

202020323321 is a wasteful number, since it uses less digits than its factorization.

202020323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 202020323321 its reverse (123323020202), we get a palindrome (325343343523).

The spelling of 202020323321 in words is "two hundred two billion, twenty million, three hundred twenty-three thousand, three hundred twenty-one".