12320144333421 has 16 divisors (see below), whose sum is σ = 16537834403520. Its totient is φ = 8158004087040.

The previous prime is 12320144333389. The next prime is 12320144333423. The reversal of 12320144333421 is 12433344102321.

12320144333421 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 12320144333421 - 2⁵ = 12320144333389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320144333423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6978636 + ... + 8563973.

It is an arithmetic number, because the mean of its divisors is an integer number (1033614650220).

Almost surely, 2^{12320144333421} is an apocalyptic number.

It is an amenable number.

12320144333421 is a deficient number, since it is larger than the sum of its proper divisors (4217690070099).

12320144333421 is a wasteful number, since it uses less digits than its factorization.

12320144333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15544396.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 12320144333421 its reverse (12433344102321), we get a palindrome (24753488435742).

The spelling of 12320144333421 in words is "twelve trillion, three hundred twenty billion, one hundred forty-four million, three hundred thirty-three thousand, four hundred twenty-one".