12221123320116 has 72 divisors (see below), whose sum is σ = 31550498179200. Its totient is φ = 3986915412096.

The previous prime is 12221123320031. The next prime is 12221123320123. The reversal of 12221123320116 is 61102332112221.

It is a happy number.

12221123320116 is a `hidden beast` number, since 1 + 2 + 2 + 211 + 2 + 332 + 0 + 116 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12221123320116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71362560 + ... + 71533608.

It is an arithmetic number, because the mean of its divisors is an integer number (438201363600).

Almost surely, 2^{12221123320116} is an apocalyptic number.

It is an amenable number.

12221123320116 is an abundant number, since it is smaller than the sum of its proper divisors (19329374859084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221123320116 is a wasteful number, since it uses less digits than its factorization.

12221123320116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213333 (or 213328 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 12221123320116 its reverse (61102332112221), we get a palindrome (73323455432337).

The spelling of 12221123320116 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-three million, three hundred twenty thousand, one hundred sixteen".