3221124320 has 96 divisors (see below), whose sum is σ = 7850618496. Its totient is φ = 1248256000.

The previous prime is 3221124311. The next prime is 3221124331. The reversal of 3221124320 is 234211223.

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 = 3221124292 and 3221124301.

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, 757400 + ... + 761640.

It is an arithmetic number, because the mean of its divisors is an integer number (81777276).

Almost surely, 2^3221124320 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 3221124320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3925309248).

3221124320 is an abundant number, since it is smaller than the sum of its proper divisors (4629494176).

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

3221124320 is a wasteful number, since it uses less digits than its factorization.

3221124320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404 (or 4396 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3221124320 is about 56754.9497400887. The cubic root of 3221124320 is about 1476.8481011508.

Adding to 3221124320 its reverse (234211223), we get a palindrome (3455335543).

The spelling of 3221124320 in words is "three billion, two hundred twenty-one million, one hundred twenty-four thousand, three hundred twenty".