3221100440 has 64 divisors (see below), whose sum is σ = 7398086400. Its totient is φ = 1261757952.

The previous prime is 3221100439. The next prime is 3221100461. The reversal of 3221100440 is 440011223.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502009 + ... + 1504151.

It is an arithmetic number, because the mean of its divisors is an integer number (115595100).

Almost surely, 2^3221100440 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 3221100440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3699043200).

3221100440 is an abundant number, since it is smaller than the sum of its proper divisors (4176985960).

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

3221100440 is a wasteful number, since it uses less digits than its factorization.

3221100440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2912 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3221100440 is about 56754.7393615723. The cubic root of 3221100440 is about 1476.8444515742.

Adding to 3221100440 its reverse (440011223), we get a palindrome (3661111663).

The spelling of 3221100440 in words is "three billion, two hundred twenty-one million, one hundred thousand, four hundred forty".