16120321 has 8 divisors (see below), whose sum is σ = 18771264. Its totient is φ = 13556400.

The previous prime is 16120319. The next prime is 16120331. The reversal of 16120321 is 12302161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16120321 - 2¹ = 16120319 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 16120295 and 16120304.

It is not an unprimeable number, because it can be changed into a prime (16120331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21355 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (2346408).

Almost surely, 2^16120321 is an apocalyptic number.

It is an amenable number.

16120321 is a deficient number, since it is larger than the sum of its proper divisors (2650943).

16120321 is an equidigital number, since it uses as much as digits as its factorization.

16120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43511.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16120321 is about 4015.0119551503. The cubic root of 16120321 is about 252.6142788919.

Adding to 16120321 its reverse (12302161), we get a palindrome (28422482).

The spelling of 16120321 in words is "sixteen million, one hundred twenty thousand, three hundred twenty-one".