12213312123213 has 12 divisors (see below), whose sum is σ = 17641777439260. Its totient is φ = 8142057346176.

The previous prime is 12213312123211. The next prime is 12213312123247. The reversal of 12213312123213 is 31232121331221.

12213312123213 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 331 + 2 + 1 + 2 + 321 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1805739313284 + 10407572809929 = 1343778^2 + 3226077^2 .

It is not a de Polignac number, because 12213312123213 - 2¹ = 12213312123211 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 (12213312123211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12047068 + ... + 13021461.

Almost surely, 2^{12213312123213} is an apocalyptic number.

It is an amenable number.

12213312123213 is a deficient number, since it is larger than the sum of its proper divisors (5428465316047).

12213312123213 is a wasteful number, since it uses less digits than its factorization.

12213312123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25122668 (or 25122665 counting only the distinct ones).

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

Adding to 12213312123213 its reverse (31232121331221), we get a palindrome (43445433454434).

The spelling of 12213312123213 in words is "twelve trillion, two hundred thirteen billion, three hundred twelve million, one hundred twenty-three thousand, two hundred thirteen".