212323212223 has 4 divisors (see below), whose sum is σ = 224812812960. Its totient is φ = 199833611488.

The previous prime is 212323212193. The next prime is 212323212229. The reversal of 212323212223 is 322212323212.

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 212323212223 - 2²⁵ = 212289657791 is a prime.

It is a super-2 number, since 2×212323212223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323212229) 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, 6244800343 + ... + 6244800376.

It is an arithmetic number, because the mean of its divisors is an integer number (56203203240).

Almost surely, 2^212323212223 is an apocalyptic number.

212323212223 is a deficient number, since it is larger than the sum of its proper divisors (12489600737).

212323212223 is a wasteful number, since it uses less digits than its factorization.

212323212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12489600736.

The product of its digits is 3456, while the sum is 25.

Adding to 212323212223 its reverse (322212323212), we get a palindrome (534535535435).

The spelling of 212323212223 in words is "two hundred twelve billion, three hundred twenty-three million, two hundred twelve thousand, two hundred twenty-three".