212322223213 has 2 divisors, whose sum is σ = 212322223214. Its totient is φ = 212322223212.

The previous prime is 212322223189. The next prime is 212322223229. The reversal of 212322223213 is 312322223212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125884459204 + 86437764009 = 354802^2 + 294003^2 .

It is a cyclic number.

It is not a de Polignac number, because 212322223213 - 2²⁹ = 211785352301 is a prime.

It is a super-2 number, since 2×212322223213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212322223313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106161111606 + 106161111607.

It is an arithmetic number, because the mean of its divisors is an integer number (106161111607).

Almost surely, 2^212322223213 is an apocalyptic number.

It is an amenable number.

212322223213 is a deficient number, since it is larger than the sum of its proper divisors (1).

212322223213 is an equidigital number, since it uses as much as digits as its factorization.

212322223213 is an evil number, because the sum of its binary digits is even.

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

Adding to 212322223213 its reverse (312322223212), we get a palindrome (524644446425).

Subtracting 212322223213 from its reverse (312322223212), we obtain a palindrome (99999999999).

The spelling of 212322223213 in words is "two hundred twelve billion, three hundred twenty-two million, two hundred twenty-three thousand, two hundred thirteen".