320021013101 has 4 divisors (see below), whose sum is σ = 320022275232. Its totient is φ = 320019750972.

The previous prime is 320021013089. The next prime is 320021013167. The reversal of 320021013101 is 101310120023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320021013101 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 (320021013401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103991 + ... + 806756.

It is an arithmetic number, because the mean of its divisors is an integer number (80005568808).

Almost surely, 2^320021013101 is an apocalyptic number.

It is an amenable number.

320021013101 is a deficient number, since it is larger than the sum of its proper divisors (1262131).

320021013101 is an equidigital number, since it uses as much as digits as its factorization.

320021013101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262130.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 320021013101 its reverse (101310120023), we get a palindrome (421331133124).

The spelling of 320021013101 in words is "three hundred twenty billion, twenty-one million, thirteen thousand, one hundred one".