11011220201111 has 12 divisors (see below), whose sum is σ = 11923955475120. Its totient is φ = 10163723169600.

The previous prime is 11011220201101. The next prime is 11011220201123. The reversal of 11011220201111 is 11110202211011.

It is not a de Polignac number, because 11011220201111 - 2³⁴ = 10994040331927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011220201101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2074811 + ... + 5131011.

It is an arithmetic number, because the mean of its divisors is an integer number (993662956260).

Almost surely, 2^{11011220201111} is an apocalyptic number.

11011220201111 is a deficient number, since it is larger than the sum of its proper divisors (912735274009).

11011220201111 is a wasteful number, since it uses less digits than its factorization.

11011220201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077546 (or 3077533 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011220201111 its reverse (11110202211011), we get a palindrome (22121422412122).

The spelling of 11011220201111 in words is "eleven trillion, eleven billion, two hundred twenty million, two hundred one thousand, one hundred eleven".