12221211303361 has 2 divisors, whose sum is σ = 12221211303362. Its totient is φ = 12221211303360.

The previous prime is 12221211303337. The next prime is 12221211303377. The reversal of 12221211303361 is 16330311212221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7227059045761 + 4994152257600 = 2688319^2 + 2234760^2 .

It is an emirp because it is prime and its reverse (16330311212221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12221211303361 - 2¹³ = 12221211295169 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221211309361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110605651680 + 6110605651681.

It is an arithmetic number, because the mean of its divisors is an integer number (6110605651681).

Almost surely, 2^{12221211303361} is an apocalyptic number.

It is an amenable number.

12221211303361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221211303361 is an equidigital number, since it uses as much as digits as its factorization.

12221211303361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 12221211303361 its reverse (16330311212221), we get a palindrome (28551522515582).

The spelling of 12221211303361 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, three hundred three thousand, three hundred sixty-one".