320202112021 has 16 divisors (see below), whose sum is σ = 353025008640. Its totient is φ = 288005082480.

The previous prime is 320202111991. The next prime is 320202112033. The reversal of 320202112021 is 120211202023.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 320202112021 - 2¹³ = 320202103829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320202111986 and 320202112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320202112091) by changing a digit.

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, 753460 + ... + 1099138.

It is an arithmetic number, because the mean of its divisors is an integer number (22064063040).

Almost surely, 2^320202112021 is an apocalyptic number.

It is an amenable number.

320202112021 is a deficient number, since it is larger than the sum of its proper divisors (32822896619).

320202112021 is a wasteful number, since it uses less digits than its factorization.

320202112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346584.

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

Adding to 320202112021 its reverse (120211202023), we get a palindrome (440413314044).

The spelling of 320202112021 in words is "three hundred twenty billion, two hundred two million, one hundred twelve thousand, twenty-one".