212331022213 has 2 divisors, whose sum is σ = 212331022214. Its totient is φ = 212331022212.

The previous prime is 212331022199. The next prime is 212331022217. The reversal of 212331022213 is 312220133212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188410687969 + 23920334244 = 434063^2 + 154662^2 .

It is a cyclic number.

It is not a de Polignac number, because 212331022213 - 2³³ = 203741087621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212331022217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165511106 + 106165511107.

It is an arithmetic number, because the mean of its divisors is an integer number (106165511107).

Almost surely, 2^212331022213 is an apocalyptic number.

It is an amenable number.

212331022213 is a deficient number, since it is larger than the sum of its proper divisors (1).

212331022213 is an equidigital number, since it uses as much as digits as its factorization.

212331022213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212331022213 its reverse (312220133212), we get a palindrome (524551155425).

The spelling of 212331022213 in words is "two hundred twelve billion, three hundred thirty-one million, twenty-two thousand, two hundred thirteen".