2212323823 has 4 divisors (see below), whose sum is σ = 2213655808. Its totient is φ = 2210991840.

The previous prime is 2212323811. The next prime is 2212323833. The reversal of 2212323823 is 3283232122.

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

It is a cyclic number.

It is not a de Polignac number, because 2212323823 - 2⁵ = 2212323791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212323791 and 2212323800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212323833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663498 + ... + 666823.

It is an arithmetic number, because the mean of its divisors is an integer number (553413952).

Almost surely, 2^2212323823 is an apocalyptic number.

2212323823 is a deficient number, since it is larger than the sum of its proper divisors (1331985).

2212323823 is a wasteful number, since it uses less digits than its factorization.

2212323823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331984.

The product of its digits is 6912, while the sum is 28.

The square root of 2212323823 is about 47035.3465279039. The cubic root of 2212323823 is about 1303.0154503180.

Adding to 2212323823 its reverse (3283232122), we get a palindrome (5495555945).

The spelling of 2212323823 in words is "two billion, two hundred twelve million, three hundred twenty-three thousand, eight hundred twenty-three".