212333231213 has 2 divisors, whose sum is σ = 212333231214. Its totient is φ = 212333231212.

The previous prime is 212333231113. The next prime is 212333231233. The reversal of 212333231213 is 312132333212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181801609924 + 30531621289 = 426382^2 + 174733^2 .

It is a cyclic number.

It is not a de Polignac number, because 212333231213 - 2¹⁶ = 212333165677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212333231233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106166615606 + 106166615607.

It is an arithmetic number, because the mean of its divisors is an integer number (106166615607).

Almost surely, 2^212333231213 is an apocalyptic number.

It is an amenable number.

212333231213 is a deficient number, since it is larger than the sum of its proper divisors (1).

212333231213 is an equidigital number, since it uses as much as digits as its factorization.

212333231213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 26.

Adding to 212333231213 its reverse (312132333212), we get a palindrome (524465564425).

The spelling of 212333231213 in words is "two hundred twelve billion, three hundred thirty-three million, two hundred thirty-one thousand, two hundred thirteen".