12221324142241 has 4 divisors (see below), whose sum is σ = 12221331151492. Its totient is φ = 12221317132992.

The previous prime is 12221324142197. The next prime is 12221324142277. The reversal of 12221324142241 is 14224142312221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9227645591616 + 2993678550625 = 3037704^2 + 1730225^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221324142241 - 2¹⁵ = 12221324109473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221324143241) 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, 1381621 + ... + 5133373.

It is an arithmetic number, because the mean of its divisors is an integer number (3055332787873).

Almost surely, 2^{12221324142241} is an apocalyptic number.

It is an amenable number.

12221324142241 is a deficient number, since it is larger than the sum of its proper divisors (7009251).

12221324142241 is an equidigital number, since it uses as much as digits as its factorization.

12221324142241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009250.

The product of its digits is 12288, while the sum is 31.

Adding to 12221324142241 its reverse (14224142312221), we get a palindrome (26445466454462).

The spelling of 12221324142241 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty-four million, one hundred forty-two thousand, two hundred forty-one".