12321053353542 has 64 divisors (see below), whose sum is σ = 26231817185280. Its totient is φ = 3844709270016.

The previous prime is 12321053353541. The next prime is 12321053353549. The reversal of 12321053353542 is 24535335012321.

It is a self number, because there is not a number n which added to its sum of digits gives 12321053353542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321053353541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16284973 + ... + 17024759.

It is an arithmetic number, because the mean of its divisors is an integer number (409872143520).

Almost surely, 2^{12321053353542} is an apocalyptic number.

12321053353542 is an abundant number, since it is smaller than the sum of its proper divisors (13910763831738).

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

12321053353542 is a wasteful number, since it uses less digits than its factorization.

12321053353542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740685.

The product of its (nonzero) digits is 324000, while the sum is 39.

Adding to 12321053353542 its reverse (24535335012321), we get a palindrome (36856388365863).

The spelling of 12321053353542 in words is "twelve trillion, three hundred twenty-one billion, fifty-three million, three hundred fifty-three thousand, five hundred forty-two".