12213312231321 has 6 divisors (see below), whose sum is σ = 17641451000810. Its totient is φ = 8142208154208.

The previous prime is 12213312231311. The next prime is 12213312231359. The reversal of 12213312231321 is 12313221331221.

12213312231321 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 3 + 312 + 23 + 1 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11958351867225 + 254960364096 = 3458085^2 + 504936^2 .

It is not a de Polignac number, because 12213312231321 - 2¹⁰ = 12213312230297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213312231311) 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, 678517346176 + ... + 678517346193.

Almost surely, 2^{12213312231321} is an apocalyptic number.

It is an amenable number.

12213312231321 is a deficient number, since it is larger than the sum of its proper divisors (5428138769489).

12213312231321 is a wasteful number, since it uses less digits than its factorization.

12213312231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357034692375 (or 1357034692372 counting only the distinct ones).

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

Adding to 12213312231321 its reverse (12313221331221), we get a palindrome (24526533562542).

The spelling of 12213312231321 in words is "twelve trillion, two hundred thirteen billion, three hundred twelve million, two hundred thirty-one thousand, three hundred twenty-one".