3221321130 has 64 divisors (see below), whose sum is σ = 8604645120. Its totient is φ = 857573568.

The previous prime is 3221321113. The next prime is 3221321137. The reversal of 3221321130 is 311231223.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3221321137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155779 + ... + 175241.

It is an arithmetic number, because the mean of its divisors is an integer number (134447580).

Almost surely, 2^3221321130 is an apocalyptic number.

3221321130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221321130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4302322560).

3221321130 is an abundant number, since it is smaller than the sum of its proper divisors (5383323990).

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

3221321130 is a wasteful number, since it uses less digits than its factorization.

3221321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20092 (or 20086 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3221321130 is about 56756.6835711883. The cubic root of 3221321130 is about 1476.8781789048.

Adding to 3221321130 its reverse (311231223), we get a palindrome (3532552353).

The spelling of 3221321130 in words is "three billion, two hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty".