12321220141 has 2 divisors, whose sum is σ = 12321220142. Its totient is φ = 12321220140.

The previous prime is 12321220127. The next prime is 12321220159. The reversal of 12321220141 is 14102212321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9673706025 + 2647514116 = 98355^2 + 51454^2 .

It is an emirp because it is prime and its reverse (14102212321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12321220141 - 2¹⁹ = 12320695853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12324220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160610070 + 6160610071.

It is an arithmetic number, because the mean of its divisors is an integer number (6160610071).

Almost surely, 2^12321220141 is an apocalyptic number.

It is an amenable number.

12321220141 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321220141 is an equidigital number, since it uses as much as digits as its factorization.

12321220141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12321220141 its reverse (14102212321), we get a palindrome (26423432462).

The spelling of 12321220141 in words is "twelve billion, three hundred twenty-one million, two hundred twenty thousand, one hundred forty-one".