12321206630645 has 128 divisors (see below), whose sum is σ = 17203898880000. Its totient is φ = 8383075430400.

The previous prime is 12321206630597. The next prime is 12321206630647. The reversal of 12321206630645 is 54603660212321.

12321206630645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12321206630645 - 2⁶ = 12321206630581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321206630647) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16672809686 + ... + 16672810424.

It is an arithmetic number, because the mean of its divisors is an integer number (134405460000).

Almost surely, 2^{12321206630645} is an apocalyptic number.

It is an amenable number.

12321206630645 is a deficient number, since it is larger than the sum of its proper divisors (4882692249355).

12321206630645 is a wasteful number, since it uses less digits than its factorization.

12321206630645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 12321206630645 its reverse (54603660212321), we get a palindrome (66924866842966).

The spelling of 12321206630645 in words is "twelve trillion, three hundred twenty-one billion, two hundred six million, six hundred thirty thousand, six hundred forty-five".