12321050442456 has 128 divisors (see below), whose sum is σ = 35410226688000. Its totient is φ = 3499607928960.

The previous prime is 12321050442419. The next prime is 12321050442473. The reversal of 12321050442456 is 65424405012321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38991511 + ... + 39306233.

It is an arithmetic number, because the mean of its divisors is an integer number (276642396000).

Almost surely, 2^{12321050442456} 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 12321050442456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17705113344000).

12321050442456 is an abundant number, since it is smaller than the sum of its proper divisors (23089176245544).

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

12321050442456 is a wasteful number, since it uses less digits than its factorization.

12321050442456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316109 (or 316105 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 12321050442456 its reverse (65424405012321), we get a palindrome (77745455454777).

The spelling of 12321050442456 in words is "twelve trillion, three hundred twenty-one billion, fifty million, four hundred forty-two thousand, four hundred fifty-six".