321003203112 has 96 divisors (see below), whose sum is σ = 884719505280. Its totient is φ = 105117886080.

The previous prime is 321003203111. The next prime is 321003203197. The reversal of 321003203112 is 211302300123.

321003203112 is a `hidden beast` number, since 32 + 1 + 0 + 0 + 320 + 311 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (321003203111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3570213 + ... + 3659019.

It is an arithmetic number, because the mean of its divisors is an integer number (9215828180).

Almost surely, 2^321003203112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321003203112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442359752640).

321003203112 is an abundant number, since it is smaller than the sum of its proper divisors (563716302168).

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

321003203112 is a wasteful number, since it uses less digits than its factorization.

321003203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89703 (or 89696 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 321003203112 its reverse (211302300123), we get a palindrome (532305503235).

The spelling of 321003203112 in words is "three hundred twenty-one billion, three million, two hundred three thousand, one hundred twelve".