3821221184 has 56 divisors (see below), whose sum is σ = 8395642848. Its totient is φ = 1710973440.

The previous prime is 3821221181. The next prime is 3821221211. The reversal of 3821221184 is 4811221283.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 3821221184.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821221181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6662 + ... + 87674.

Almost surely, 2^3821221184 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 3821221184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4197821424).

3821221184 is an abundant number, since it is smaller than the sum of its proper divisors (4574421664).

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

3821221184 is a wasteful number, since it uses less digits than its factorization.

3821221184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81103 (or 81093 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 3821221184 is about 61816.0269185913. The cubic root of 3821221184 is about 1563.3902250254.

Subtracting 3821221184 from its reverse (4811221283), we obtain a palindrome (990000099).

The spelling of 3821221184 in words is "three billion, eight hundred twenty-one million, two hundred twenty-one thousand, one hundred eighty-four".