2216776123 has 4 divisors (see below), whose sum is σ = 2224665288. Its totient is φ = 2208886960.

The previous prime is 2216776099. The next prime is 2216776127. The reversal of 2216776123 is 3216776122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216776123 is a prime.

It is a super-2 number, since 2×2216776123² = 9828192759005822258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216776127) 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 3 ways as a sum of consecutive naturals, for example, 3944161 + ... + 3944722.

It is an arithmetic number, because the mean of its divisors is an integer number (556166322).

Almost surely, 2^2216776123 is an apocalyptic number.

2216776123 is a deficient number, since it is larger than the sum of its proper divisors (7889165).

2216776123 is an equidigital number, since it uses as much as digits as its factorization.

2216776123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889164.

The product of its digits is 42336, while the sum is 37.

The square root of 2216776123 is about 47082.6520387287. The cubic root of 2216776123 is about 1303.8889704590. Note that the first 3 decimals are identical.

Subtracting 2216776123 from its reverse (3216776122), we obtain a palindrome (999999999).

The spelling of 2216776123 in words is "two billion, two hundred sixteen million, seven hundred seventy-six thousand, one hundred twenty-three".