320201323220021 has 8 divisors (see below), whose sum is σ = 322324755890688. Its totient is φ = 318077928630000.

The previous prime is 320201323219937. The next prime is 320201323220027. The reversal of 320201323220021 is 120022323102023.

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 320201323220021 - 2⁴⁶ = 249832579042357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320201323220027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7452611 + ... + 26380751.

It is an arithmetic number, because the mean of its divisors is an integer number (40290594486336).

Almost surely, 2^{320201323220021} is an apocalyptic number.

It is an amenable number.

320201323220021 is a deficient number, since it is larger than the sum of its proper divisors (2123432670667).

320201323220021 is a wasteful number, since it uses less digits than its factorization.

320201323220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19040323.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 320201323220021 its reverse (120022323102023), we get a palindrome (440223646322044).

The spelling of 320201323220021 in words is "three hundred twenty trillion, two hundred one billion, three hundred twenty-three million, two hundred twenty thousand, twenty-one".