16022321 has 16 divisors (see below), whose sum is σ = 18808320. Its totient is φ = 13366080.

The previous prime is 16022311. The next prime is 16022323. The reversal of 16022321 is 12322061.

It is not a de Polignac number, because 16022321 - 2¹⁰ = 16021297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16022321.

It is not an unprimeable number, because it can be changed into a prime (16022323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66920 + ... + 67158.

It is an arithmetic number, because the mean of its divisors is an integer number (1175520).

Almost surely, 2^16022321 is an apocalyptic number.

It is an amenable number.

16022321 is a deficient number, since it is larger than the sum of its proper divisors (2785999).

16022321 is a wasteful number, since it uses less digits than its factorization.

16022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16022321 is about 4002.7891525785. The cubic root of 16022321 is about 252.1013334383.

Adding to 16022321 its reverse (12322061), we get a palindrome (28344382).

The spelling of 16022321 in words is "sixteen million, twenty-two thousand, three hundred twenty-one".