11211120111011 has 2 divisors, whose sum is σ = 11211120111012. Its totient is φ = 11211120111010.

The previous prime is 11211120110987. The next prime is 11211120111041. The reversal of 11211120111011 is 11011102111211.

11211120111011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (11011102111211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11211120111011 - 2³⁰ = 11210046369187 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211120111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605560055505 + 5605560055506.

It is an arithmetic number, because the mean of its divisors is an integer number (5605560055506).

Almost surely, 2^{11211120111011} is an apocalyptic number.

11211120111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211120111011 is an equidigital number, since it uses as much as digits as its factorization.

11211120111011 is an evil number, because the sum of its binary digits is even.

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

Adding to 11211120111011 its reverse (11011102111211), we get a palindrome (22222222222222).

The spelling of 11211120111011 in words is "eleven trillion, two hundred eleven billion, one hundred twenty million, one hundred eleven thousand, eleven".