212212221223 has 2 divisors, whose sum is σ = 212212221224. Its totient is φ = 212212221222.

The previous prime is 212212221203. The next prime is 212212221239. The reversal of 212212221223 is 322122212212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212221223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212212221194 and 212212221203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212212221203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106110611 + 106106110612.

It is an arithmetic number, because the mean of its divisors is an integer number (106106110612).

Almost surely, 2^212212221223 is an apocalyptic number.

212212221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212221223 is an equidigital number, since it uses as much as digits as its factorization.

212212221223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

Adding to 212212221223 its reverse (322122212212), we get a palindrome (534334433435).

The spelling of 212212221223 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-three".