16216105 has 4 divisors (see below), whose sum is σ = 19459332. Its totient is φ = 12972880.

The previous prime is 16216099. The next prime is 16216111. The reversal of 16216105 is 50161261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50161261 = 3407 ⋅14723.

It is an interprime number because it is at equal distance from previous prime (16216099) and next prime (16216111).

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 13271449 = 1716^2 + 3643^2 .

It is not a de Polignac number, because 16216105 - 2⁵ = 16216073 is a prime.

It is a super-2 number, since 2×16216105² = 525924122742050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1621606 + ... + 1621615.

It is an arithmetic number, because the mean of its divisors is an integer number (4864833).

Almost surely, 2^16216105 is an apocalyptic number.

It is an amenable number.

16216105 is a deficient number, since it is larger than the sum of its proper divisors (3243227).

16216105 is an equidigital number, since it uses as much as digits as its factorization.

16216105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243226.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 16216105 is about 4026.9225222246. The cubic root of 16216105 is about 253.1136204812.

Adding to 16216105 its reverse (50161261), we get a palindrome (66377366).

The spelling of 16216105 in words is "sixteen million, two hundred sixteen thousand, one hundred five".