12220321340312 has 64 divisors (see below), whose sum is σ = 23950466553600. Its totient is φ = 5834449272960.

The previous prime is 12220321340257. The next prime is 12220321340323. The reversal of 12220321340312 is 21304312302221.

It is a super-2 number, since 2×12220321340312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559041239 + ... + 559063097.

It is an arithmetic number, because the mean of its divisors is an integer number (374226039900).

Almost surely, 2^{12220321340312} is an apocalyptic number.

It is an amenable number.

12220321340312 is a deficient number, since it is larger than the sum of its proper divisors (11730145213288).

12220321340312 is a wasteful number, since it uses less digits than its factorization.

12220321340312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26976 (or 26972 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12220321340312 its reverse (21304312302221), we get a palindrome (33524633642533).

The spelling of 12220321340312 in words is "twelve trillion, two hundred twenty billion, three hundred twenty-one million, three hundred forty thousand, three hundred twelve".