13111103221211 has 2 divisors, whose sum is σ = 13111103221212. Its totient is φ = 13111103221210.

The previous prime is 13111103221207. The next prime is 13111103221231. The reversal of 13111103221211 is 11212230111131.

It is an a-pointer prime, because the next prime (13111103221231) can be obtained adding 13111103221211 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13111103221211 - 2² = 13111103221207 is a prime.

It is not a weakly prime, because it can be changed into another prime (13111103221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555551610605 + 6555551610606.

It is an arithmetic number, because the mean of its divisors is an integer number (6555551610606).

Almost surely, 2^{13111103221211} is an apocalyptic number.

13111103221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111103221211 is an equidigital number, since it uses as much as digits as its factorization.

13111103221211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 13111103221211 its reverse (11212230111131), we get a palindrome (24323333332342).

The spelling of 13111103221211 in words is "thirteen trillion, one hundred eleven billion, one hundred three million, two hundred twenty-one thousand, two hundred eleven".