11101211201111 has 2 divisors, whose sum is σ = 11101211201112. Its totient is φ = 11101211201110.

The previous prime is 11101211201027. The next prime is 11101211201161. The reversal of 11101211201111 is 11110211210111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11101211201111 - 2¹⁸ = 11101210938967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101211201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550605600555 + 5550605600556.

It is an arithmetic number, because the mean of its divisors is an integer number (5550605600556).

Almost surely, 2^{11101211201111} is an apocalyptic number.

11101211201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101211201111 is an equidigital number, since it uses as much as digits as its factorization.

11101211201111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11101211201111 its reverse (11110211210111), we get a palindrome (22211422411222).

The spelling of 11101211201111 in words is "eleven trillion, one hundred one billion, two hundred eleven million, two hundred one thousand, one hundred eleven".