12221444244111 has 4 divisors (see below), whose sum is σ = 16295258992152. Its totient is φ = 8147629496072.

The previous prime is 12221444244109. The next prime is 12221444244131. The reversal of 12221444244111 is 11144244412221.

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

It is a cyclic number.

It is not a de Polignac number, because 12221444244111 - 2¹ = 12221444244109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221444244131) 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, 2036907374016 + ... + 2036907374021.

It is an arithmetic number, because the mean of its divisors is an integer number (4073814748038).

Almost surely, 2^{12221444244111} is an apocalyptic number.

12221444244111 is a deficient number, since it is larger than the sum of its proper divisors (4073814748041).

12221444244111 is an equidigital number, since it uses as much as digits as its factorization.

12221444244111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073814748040.

The product of its digits is 16384, while the sum is 33.

Adding to 12221444244111 its reverse (11144244412221), we get a palindrome (23365688656332).

The spelling of 12221444244111 in words is "twelve trillion, two hundred twenty-one billion, four hundred forty-four million, two hundred forty-four thousand, one hundred eleven".