11011101211211 has 2 divisors, whose sum is σ = 11011101211212. Its totient is φ = 11011101211210.

The previous prime is 11011101211163. The next prime is 11011101211249. The reversal of 11011101211211 is 11211210111011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011101211211 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011101211291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505550605605 + 5505550605606.

It is an arithmetic number, because the mean of its divisors is an integer number (5505550605606).

Almost surely, 2^{11011101211211} is an apocalyptic number.

11011101211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011101211211 is an equidigital number, since it uses as much as digits as its factorization.

11011101211211 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 11011101211211 its reverse (11211210111011), we get a palindrome (22222311322222).

The spelling of 11011101211211 in words is "eleven trillion, eleven billion, one hundred one million, two hundred eleven thousand, two hundred eleven".