3221230111220 has 96 divisors (see below), whose sum is σ = 7469907613056. Its totient is φ = 1157018688000.

The previous prime is 3221230111217. The next prime is 3221230111237. The reversal of 3221230111220 is 221110321223.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3221230111192 and 3221230111201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115042262 + ... + 115070258.

It is an arithmetic number, because the mean of its divisors is an integer number (77811537636).

Almost surely, 2^{3221230111220} 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 3221230111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3734953806528).

3221230111220 is an abundant number, since it is smaller than the sum of its proper divisors (4248677501836).

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

3221230111220 is a wasteful number, since it uses less digits than its factorization.

3221230111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34401 (or 34399 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3221230111220 its reverse (221110321223), we get a palindrome (3442340432443).

The spelling of 3221230111220 in words is "three trillion, two hundred twenty-one billion, two hundred thirty million, one hundred eleven thousand, two hundred twenty".