320021203112 has 32 divisors (see below), whose sum is σ = 649931937480. Its totient is φ = 146848316160.

The previous prime is 320021203079. The next prime is 320021203141. The reversal of 320021203112 is 211302120023.

It can be written as a sum of positive squares in 4 ways, for example, as 257257926436 + 62763276676 = 507206^2 + 250526^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8875439 + ... + 8911422.

Almost surely, 2^320021203112 is an apocalyptic number.

It is an amenable number.

320021203112 is an abundant number, since it is smaller than the sum of its proper divisors (329910734368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320021203112 is a wasteful number, since it uses less digits than its factorization.

320021203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787053 (or 17787049 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 320021203112 its reverse (211302120023), we get a palindrome (531323323135).

The spelling of 320021203112 in words is "three hundred twenty billion, twenty-one million, two hundred three thousand, one hundred twelve".