212212231213 has 4 divisors (see below), whose sum is σ = 212422551580. Its totient is φ = 212001910848.

The previous prime is 212212231207. The next prime is 212212231229. The reversal of 212212231213 is 312132212212.

212212231213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 93647016324 + 118565214889 = 306018^2 + 344333^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212231213 - 2¹⁷ = 212212100141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212231313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105158670 + ... + 105160687.

It is an arithmetic number, because the mean of its divisors is an integer number (53105637895).

Almost surely, 2^212212231213 is an apocalyptic number.

It is an amenable number.

212212231213 is a deficient number, since it is larger than the sum of its proper divisors (210320367).

212212231213 is a wasteful number, since it uses less digits than its factorization.

212212231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210320366.

The product of its digits is 576, while the sum is 22.

Adding to 212212231213 its reverse (312132212212), we get a palindrome (524344443425).

The spelling of 212212231213 in words is "two hundred twelve billion, two hundred twelve million, two hundred thirty-one thousand, two hundred thirteen".