12222112321 has 16 divisors (see below), whose sum is σ = 12923216640. Its totient is φ = 11540067840.

The previous prime is 12222112241. The next prime is 12222112327. The reversal of 12222112321 is 12321122221.

It is a cyclic number.

It is not a de Polignac number, because 12222112321 - 2⁷ = 12222112193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222112327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2083825 + ... + 2089681.

It is an arithmetic number, because the mean of its divisors is an integer number (807701040).

Almost surely, 2^12222112321 is an apocalyptic number.

It is an amenable number.

12222112321 is a deficient number, since it is larger than the sum of its proper divisors (701104319).

12222112321 is a wasteful number, since it uses less digits than its factorization.

12222112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464.

The product of its digits is 192, while the sum is 19.

Adding to 12222112321 its reverse (12321122221), we get a palindrome (24543234542).

The spelling of 12222112321 in words is "twelve billion, two hundred twenty-two million, one hundred twelve thousand, three hundred twenty-one".