3222221012220 has 192 divisors, whose sum is σ = 10339128576000. Its totient is φ = 734507827200.

The previous prime is 3222221012201. The next prime is 3222221012287. The reversal of 3222221012220 is 222101222223.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 671153820 + ... + 671158620.

It is an arithmetic number, because the mean of its divisors is an integer number (53849628000).

Almost surely, 2^{3222221012220} is an apocalyptic number.

3222221012220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3222221012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5169564288000).

3222221012220 is an abundant number, since it is smaller than the sum of its proper divisors (7116907563780).

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

3222221012220 is a wasteful number, since it uses less digits than its factorization.

3222221012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828 (or 8826 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 3222221012220 its reverse (222101222223), we get a palindrome (3444322234443).

The spelling of 3222221012220 in words is "three trillion, two hundred twenty-two billion, two hundred twenty-one million, twelve thousand, two hundred twenty".