12211021301321 has 2 divisors, whose sum is σ = 12211021301322. Its totient is φ = 12211021301320.

The previous prime is 12211021301261. The next prime is 12211021301351. The reversal of 12211021301321 is 12310312011221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7987745587600 + 4223275713721 = 2826260^2 + 2055061^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211021301321 - 2¹⁰ = 12211021300297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12211021301293 and 12211021301302.

It is not a weakly prime, because it can be changed into another prime (12211021301351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105510650660 + 6105510650661.

It is an arithmetic number, because the mean of its divisors is an integer number (6105510650661).

Almost surely, 2^{12211021301321} is an apocalyptic number.

It is an amenable number.

12211021301321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211021301321 is an equidigital number, since it uses as much as digits as its factorization.

12211021301321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12211021301321 its reverse (12310312011221), we get a palindrome (24521333312542).

The spelling of 12211021301321 in words is "twelve trillion, two hundred eleven billion, twenty-one million, three hundred one thousand, three hundred twenty-one".