12323612220144 has 20 divisors (see below), whose sum is σ = 31835998235496. Its totient is φ = 4107870740032.

The previous prime is 12323612220137. The next prime is 12323612220163. The reversal of 12323612220144 is 44102221632321.

It is a happy number.

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, 128370960579 + ... + 128370960674.

Almost surely, 2^{12323612220144} is an apocalyptic number.

It is an amenable number.

12323612220144 is an abundant number, since it is smaller than the sum of its proper divisors (19512386015352).

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

12323612220144 is a wasteful number, since it uses less digits than its factorization.

12323612220144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256741921264 (or 256741921258 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 12323612220144 its reverse (44102221632321), we get a palindrome (56425833852465).

The spelling of 12323612220144 in words is "twelve trillion, three hundred twenty-three billion, six hundred twelve million, two hundred twenty thousand, one hundred forty-four".