212023312213 has 4 divisors (see below), whose sum is σ = 219334460940. Its totient is φ = 204712163488.

The previous prime is 212023312181. The next prime is 212023312247. The reversal of 212023312213 is 312213320212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80532223524 + 131491088689 = 283782^2 + 362617^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023312213 - 2⁵ = 212023312181 is a prime.

It is a super-3 number, since 3×212023312213³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212023312273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3655574320 + ... + 3655574377.

It is an arithmetic number, because the mean of its divisors is an integer number (54833615235).

Almost surely, 2^212023312213 is an apocalyptic number.

It is an amenable number.

212023312213 is a deficient number, since it is larger than the sum of its proper divisors (7311148727).

212023312213 is an equidigital number, since it uses as much as digits as its factorization.

212023312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311148726.

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

Adding to 212023312213 its reverse (312213320212), we get a palindrome (524236632425).

The spelling of 212023312213 in words is "two hundred twelve billion, twenty-three million, three hundred twelve thousand, two hundred thirteen".