320020112011 has 4 divisors (see below), whose sum is σ = 320086885032. Its totient is φ = 319953338992.

The previous prime is 320020111997. The next prime is 320020112021. The reversal of 320020112011 is 110211020023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320020112011 - 2³¹ = 317872628363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320020111982 and 320020112000.

It is not an unprimeable number, because it can be changed into a prime (320020112021) 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, 33379321 + ... + 33388906.

It is an arithmetic number, because the mean of its divisors is an integer number (80021721258).

Almost surely, 2^320020112011 is an apocalyptic number.

320020112011 is a deficient number, since it is larger than the sum of its proper divisors (66773021).

320020112011 is an equidigital number, since it uses as much as digits as its factorization.

320020112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66773020.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 320020112011 its reverse (110211020023), we get a palindrome (430231132034).

The spelling of 320020112011 in words is "three hundred twenty billion, twenty million, one hundred twelve thousand, eleven".