321132003220 has 96 divisors (see below), whose sum is σ = 813131827200. Its totient is φ = 104069556864.

The previous prime is 321132003197. The next prime is 321132003223. The reversal of 321132003220 is 22300231123.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321132003223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1030239 + ... + 1305241.

It is an arithmetic number, because the mean of its divisors is an integer number (8470123200).

Almost surely, 2^321132003220 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 321132003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406565913600).

321132003220 is an abundant number, since it is smaller than the sum of its proper divisors (491999823980).

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

321132003220 is a wasteful number, since it uses less digits than its factorization.

321132003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275477 (or 275475 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 321132003220 its reverse (22300231123), we get a palindrome (343432234343).

The spelling of 321132003220 in words is "three hundred twenty-one billion, one hundred thirty-two million, three thousand, two hundred twenty".