12321210564234 has 144 divisors (see below), whose sum is σ = 31860521731584. Its totient is φ = 3410960716800.

The previous prime is 12321210564227. The next prime is 12321210564263. The reversal of 12321210564234 is 43246501212321.

It is a happy number.

12321210564234 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 1 + 2 + 1 + 0 + 5 + 642 + 3 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1347799 + ... + 5143829.

It is an arithmetic number, because the mean of its divisors is an integer number (221253623136).

Almost surely, 2^{12321210564234} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321210564234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15930260865792).

12321210564234 is an abundant number, since it is smaller than the sum of its proper divisors (19539311167350).

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

12321210564234 is a wasteful number, since it uses less digits than its factorization.

12321210564234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796173 (or 3796157 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12321210564234 its reverse (43246501212321), we get a palindrome (55567711776555).

The spelling of 12321210564234 in words is "twelve trillion, three hundred twenty-one billion, two hundred ten million, five hundred sixty-four thousand, two hundred thirty-four".