12222123232312 has 192 divisors, whose sum is σ = 27715670046720. Its totient is φ = 4943505600000.

The previous prime is 12222123232201. The next prime is 12222123232313. The reversal of 12222123232312 is 21323232122221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222123232313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1186493562 + ... + 1186503862.

It is an arithmetic number, because the mean of its divisors is an integer number (144352448160).

Almost surely, 2^{12222123232312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12222123232312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13857835023360).

12222123232312 is an abundant number, since it is smaller than the sum of its proper divisors (15493546814408).

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

12222123232312 is a wasteful number, since it uses less digits than its factorization.

12222123232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10614 (or 10509 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

Adding to 12222123232312 its reverse (21323232122221), we get a palindrome (33545355354533).

The spelling of 12222123232312 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred twelve".