12213323213213 has 4 divisors (see below), whose sum is σ = 12213383493948. Its totient is φ = 12213262932480.

The previous prime is 12213323213207. The next prime is 12213323213257. The reversal of 12213323213213 is 31231232331221.

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 11288135087524 + 925188125689 = 3359782^2 + 961867^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213323213213 - 2⁶ = 12213323213149 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 (12213323215213) 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, 29835428 + ... + 30242013.

It is an arithmetic number, because the mean of its divisors is an integer number (3053345873487).

Almost surely, 2^{12213323213213} is an apocalyptic number.

It is an amenable number.

12213323213213 is a deficient number, since it is larger than the sum of its proper divisors (60280735).

12213323213213 is an equidigital number, since it uses as much as digits as its factorization.

12213323213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60280734.

The product of its digits is 7776, while the sum is 29.

Adding to 12213323213213 its reverse (31231232331221), we get a palindrome (43444555544434).

The spelling of 12213323213213 in words is "twelve trillion, two hundred thirteen billion, three hundred twenty-three million, two hundred thirteen thousand, two hundred thirteen".