12111222110201 has 2 divisors, whose sum is σ = 12111222110202. Its totient is φ = 12111222110200.

The previous prime is 12111222110189. The next prime is 12111222110219. The reversal of 12111222110201 is 10201122211121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11831529210601 + 279692899600 = 3439699^2 + 528860^2 .

It is an emirp because it is prime and its reverse (10201122211121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111222110201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111222110201.

It is not a weakly prime, because it can be changed into another prime (12111222110101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055611055100 + 6055611055101.

It is an arithmetic number, because the mean of its divisors is an integer number (6055611055101).

Almost surely, 2^{12111222110201} is an apocalyptic number.

It is an amenable number.

12111222110201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111222110201 is an equidigital number, since it uses as much as digits as its factorization.

12111222110201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12111222110201 its reverse (10201122211121), we get a palindrome (22312344321322).

The spelling of 12111222110201 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, two hundred one".