320112310021 has 4 divisors (see below), whose sum is σ = 365842640032. Its totient is φ = 274381980012.

The previous prime is 320112309991. The next prime is 320112310031. The reversal of 320112310021 is 120013211023.

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.

It is not a de Polignac number, because 320112310021 - 2⁵ = 320112309989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320112309977 and 320112310004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320112310031) 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, 22865164995 + ... + 22865165008.

It is an arithmetic number, because the mean of its divisors is an integer number (91460660008).

Almost surely, 2^320112310021 is an apocalyptic number.

It is an amenable number.

320112310021 is a deficient number, since it is larger than the sum of its proper divisors (45730330011).

320112310021 is an equidigital number, since it uses as much as digits as its factorization.

320112310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45730330010.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 320112310021 its reverse (120013211023), we get a palindrome (440125521044).

The spelling of 320112310021 in words is "three hundred twenty billion, one hundred twelve million, three hundred ten thousand, twenty-one".