12203222121312 has 48 divisors (see below), whose sum is σ = 32037754553280. Its totient is φ = 4067195121792.

The previous prime is 12203222121217. The next prime is 12203222121313. The reversal of 12203222121312 is 21312122230221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203222121313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7804978 + ... + 9237105.

It is an arithmetic number, because the mean of its divisors is an integer number (667453219860).

Almost surely, 2^{12203222121312} is an apocalyptic number.

12203222121312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12203222121312 is an abundant number, since it is smaller than the sum of its proper divisors (19834532431968).

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

12203222121312 is a wasteful number, since it uses less digits than its factorization.

12203222121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17049555 (or 17049547 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12203222121312 its reverse (21312122230221), we get a palindrome (33515344351533).

The spelling of 12203222121312 in words is "twelve trillion, two hundred three billion, two hundred twenty-two million, one hundred twenty-one thousand, three hundred twelve".