2216123 has 20 divisors (see below), whose sum is σ = 2823408. Its totient is φ = 1728720.

The previous prime is 2216117. The next prime is 2216143. The reversal of 2216123 is 3216122.

2216123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2216123 - 2⁸ = 2215867 is a prime.

It is a super-2 number, since 2×2216123² = 9822402302258, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2216113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31178 + ... + 31248.

2^2216123 is an apocalyptic number.

2216123 is a deficient number, since it is larger than the sum of its proper divisors (607285).

2216123 is an frugal number, since it uses more digits than its factorization.

2216123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 91 counting only the distinct ones).

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

The square root of 2216123 is about 1488.6648380344. The cubic root of 2216123 is about 130.3760904072.

Subtracting 2216123 from its reverse (3216122), we obtain a palindrome (999999).

The spelling of 2216123 in words is "two million, two hundred sixteen thousand, one hundred twenty-three".