12213123312213 has 6 divisors (see below), whose sum is σ = 17641178117654. Its totient is φ = 8142082208136.

The previous prime is 12213123312167. The next prime is 12213123312241. The reversal of 12213123312213 is 31221332131221.

12213123312213 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 312 + 331 + 2 + 2 + 13 = 666.

12213123312213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7855558911729 + 4357564400484 = 2802777^2 + 2087478^2 .

It is not a de Polignac number, because 12213123312213 - 2⁶ = 12213123312149 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 (12213123312253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678506850670 + ... + 678506850687.

Almost surely, 2^{12213123312213} is an apocalyptic number.

It is an amenable number.

12213123312213 is a deficient number, since it is larger than the sum of its proper divisors (5428054805441).

12213123312213 is a wasteful number, since it uses less digits than its factorization.

12213123312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357013701363 (or 1357013701360 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 12213123312213 its reverse (31221332131221), we get a palindrome (43434455443434).

The spelling of 12213123312213 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred twelve thousand, two hundred thirteen".