12221120312 has 16 divisors (see below), whose sum is σ = 22916061000. Its totient is φ = 6110170720.

The previous prime is 12221120309. The next prime is 12221120323. The reversal of 12221120312 is 21302112221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118439 + ... + 196137.

Almost surely, 2^12221120312 is an apocalyptic number.

It is an amenable number.

12221120312 is a deficient number, since it is larger than the sum of its proper divisors (10694940688).

12221120312 is a wasteful number, since it uses less digits than its factorization.

12221120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97366 (or 97362 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221120312 its reverse (21302112221), we get a palindrome (33523232533).

The spelling of 12221120312 in words is "twelve billion, two hundred twenty-one million, one hundred twenty thousand, three hundred twelve".