212223313 has 2 divisors, whose sum is σ = 212223314. Its totient is φ = 212223312.

The previous prime is 212223311. The next prime is 212223343. The reversal of 212223313 is 313322212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199176769 + 13046544 = 14113^2 + 3612^2 .

It is a cyclic number.

It is not a de Polignac number, because 212223313 - 2¹ = 212223311 is a prime.

Together with 212223311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212223311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111656 + 106111657.

It is an arithmetic number, because the mean of its divisors is an integer number (106111657).

Almost surely, 2^212223313 is an apocalyptic number.

It is an amenable number.

212223313 is a deficient number, since it is larger than the sum of its proper divisors (1).

212223313 is an equidigital number, since it uses as much as digits as its factorization.

212223313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 212223313 is about 14567.8863600730. The cubic root of 212223313 is about 596.4824863872.

Adding to 212223313 its reverse (313322212), we get a palindrome (525545525).

The spelling of 212223313 in words is "two hundred twelve million, two hundred twenty-three thousand, three hundred thirteen".