320220121311 has 12 divisors (see below), whose sum is σ = 479671293192. Its totient is φ = 213480080712.

The previous prime is 320220121283. The next prime is 320220121327. The reversal of 320220121311 is 113121022023.

320220121311 is a `hidden beast` number, since 320 + 2 + 20 + 12 + 1 + 311 = 666.

It is not a de Polignac number, because 320220121311 - 2⁷ = 320220121183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320220021311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658888896 + ... + 658889381.

It is an arithmetic number, because the mean of its divisors is an integer number (39972607766).

Almost surely, 2^320220121311 is an apocalyptic number.

320220121311 is a deficient number, since it is larger than the sum of its proper divisors (159451171881).

320220121311 is an equidigital number, since it uses as much as digits as its factorization.

320220121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317778292 (or 1317778280 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 320220121311 its reverse (113121022023), we get a palindrome (433341143334).

The spelling of 320220121311 in words is "three hundred twenty billion, two hundred twenty million, one hundred twenty-one thousand, three hundred eleven".