12213333013221 has 24 divisors (see below), whose sum is σ = 18251024271480. Its totient is φ = 7860931779456.

The previous prime is 12213333013213. The next prime is 12213333013241. The reversal of 12213333013221 is 12231033331221.

12213333013221 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 3 + 3 + 330 + 1 + 322 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 47286677025 + 12166046336196 = 217455^2 + 3487986^2 .

It is not a de Polignac number, because 12213333013221 - 2³ = 12213333013213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213333013241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2383251 + ... + 5486943.

It is an arithmetic number, because the mean of its divisors is an integer number (760459344645).

Almost surely, 2^{12213333013221} is an apocalyptic number.

It is an amenable number.

12213333013221 is a deficient number, since it is larger than the sum of its proper divisors (6037691258259).

12213333013221 is a wasteful number, since it uses less digits than its factorization.

12213333013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118805 (or 3118802 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 12213333013221 its reverse (12231033331221), we get a palindrome (24444366344442).

The spelling of 12213333013221 in words is "twelve trillion, two hundred thirteen billion, three hundred thirty-three million, thirteen thousand, two hundred twenty-one".