4421320321 has 16 divisors (see below), whose sum is σ = 5021928576. Its totient is φ = 3857040000.

The previous prime is 4421320313. The next prime is 4421320327. The reversal of 4421320321 is 1230231244.

It is not a de Polignac number, because 4421320321 - 2³ = 4421320313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4421320292 and 4421320301.

It is not an unprimeable number, because it can be changed into a prime (4421320327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52845 + ... + 107866.

It is an arithmetic number, because the mean of its divisors is an integer number (313870536).

Almost surely, 2^4421320321 is an apocalyptic number.

4421320321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4421320321 is a deficient number, since it is larger than the sum of its proper divisors (600608255).

4421320321 is a wasteful number, since it uses less digits than its factorization.

4421320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160824.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4421320321 is about 66493.0095649159. The cubic root of 4421320321 is about 1641.2849736249.

Adding to 4421320321 its reverse (1230231244), we get a palindrome (5651551565).

The spelling of 4421320321 in words is "four billion, four hundred twenty-one million, three hundred twenty thousand, three hundred twenty-one".