12213332221231 has 4 divisors (see below), whose sum is σ = 12634481608200. Its totient is φ = 11792182834264.

The previous prime is 12213332221117. The next prime is 12213332221291. The reversal of 12213332221231 is 13212223331221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12213332221231 is a prime.

It is a super-2 number, since 2×12213332221231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12213332221231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213332221291) 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, 210574693441 + ... + 210574693498.

It is an arithmetic number, because the mean of its divisors is an integer number (3158620402050).

Almost surely, 2^{12213332221231} is an apocalyptic number.

12213332221231 is a deficient number, since it is larger than the sum of its proper divisors (421149386969).

12213332221231 is an equidigital number, since it uses as much as digits as its factorization.

12213332221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421149386968.

The product of its digits is 5184, while the sum is 28.

Adding to 12213332221231 its reverse (13212223331221), we get a palindrome (25425555552452).

The spelling of 12213332221231 in words is "twelve trillion, two hundred thirteen billion, three hundred thirty-two million, two hundred twenty-one thousand, two hundred thirty-one".