12211022440321 has 4 divisors (see below), whose sum is σ = 12211074361044. Its totient is φ = 12210970519600.

The previous prime is 12211022440303. The next prime is 12211022440333. The reversal of 12211022440321 is 12304422011221.

12211022440321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9529815961600 + 2681206478721 = 3087040^2 + 1637439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211022440321 - 2⁹ = 12211022439809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211022420321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25605970 + ... + 26078491.

It is an arithmetic number, because the mean of its divisors is an integer number (3052768590261).

Almost surely, 2^{12211022440321} is an apocalyptic number.

It is an amenable number.

12211022440321 is a deficient number, since it is larger than the sum of its proper divisors (51920723).

12211022440321 is an equidigital number, since it uses as much as digits as its factorization.

12211022440321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51920722.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 12211022440321 its reverse (12304422011221), we get a palindrome (24515444451542).

The spelling of 12211022440321 in words is "twelve trillion, two hundred eleven billion, twenty-two million, four hundred forty thousand, three hundred twenty-one".