212311212223 has 8 divisors (see below), whose sum is σ = 231625054080. Its totient is φ = 192999507480.

The previous prime is 212311212121. The next prime is 212311212247. The reversal of 212311212223 is 322212113212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212311212223 - 2⁹ = 212311211711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212311212194 and 212311212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311212823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322915 + ... + 727252.

It is an arithmetic number, because the mean of its divisors is an integer number (28953131760).

Almost surely, 2^212311212223 is an apocalyptic number.

212311212223 is a deficient number, since it is larger than the sum of its proper divisors (19313841857).

212311212223 is a wasteful number, since it uses less digits than its factorization.

212311212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068557.

The product of its digits is 576, while the sum is 22.

Adding to 212311212223 its reverse (322212113212), we get a palindrome (534523325435).

The spelling of 212311212223 in words is "two hundred twelve billion, three hundred eleven million, two hundred twelve thousand, two hundred twenty-three".