2216105 has 4 divisors (see below), whose sum is σ = 2659332. Its totient is φ = 1772880.

The previous prime is 2216101. The next prime is 2216113. The reversal of 2216105 is 5016122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 267289 + 1948816 = 517^2 + 1396^2 .

It is not a de Polignac number, because 2216105 - 2² = 2216101 is a prime.

It is a super-2 number, since 2×2216105² = 9822242742050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221606 + ... + 221615.

It is an arithmetic number, because the mean of its divisors is an integer number (664833).

2^2216105 is an apocalyptic number.

It is an amenable number.

2216105 is a deficient number, since it is larger than the sum of its proper divisors (443227).

2216105 is an equidigital number, since it uses as much as digits as its factorization.

2216105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443226.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2216105 is about 1488.6587923362. The cubic root of 2216105 is about 130.3757374220.

Adding to 2216105 its sum of digits (17), we get a palindrome (2216122).

The spelling of 2216105 in words is "two million, two hundred sixteen thousand, one hundred five".