12231224013221 has 8 divisors (see below), whose sum is σ = 12242544177024. Its totient is φ = 12219907702240.

The previous prime is 12231224013191. The next prime is 12231224013233. The reversal of 12231224013221 is 12231042213221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12231224013221 - 2¹⁰ = 12231224012197 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 (12231224013251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5408441 + ... + 7328961.

It is an arithmetic number, because the mean of its divisors is an integer number (1530318022128).

Almost surely, 2^{12231224013221} is an apocalyptic number.

It is an amenable number.

12231224013221 is a deficient number, since it is larger than the sum of its proper divisors (11320163803).

12231224013221 is a wasteful number, since it uses less digits than its factorization.

12231224013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926411.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12231224013221 its reverse (12231042213221), we get a palindrome (24462266226442).

The spelling of 12231224013221 in words is "twelve trillion, two hundred thirty-one billion, two hundred twenty-four million, thirteen thousand, two hundred twenty-one".