11212211111011 has 16 divisors (see below), whose sum is σ = 11474698715136. Its totient is φ = 10950731116416.

The previous prime is 11212211111009. The next prime is 11212211111041. The reversal of 11212211111011 is 11011111221211.

It is a cyclic number.

It is not a de Polignac number, because 11212211111011 - 2¹ = 11212211111009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212211111041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101932635 + ... + 102042571.

It is an arithmetic number, because the mean of its divisors is an integer number (717168669696).

Almost surely, 2^{11212211111011} is an apocalyptic number.

11212211111011 is a deficient number, since it is larger than the sum of its proper divisors (262487604125).

11212211111011 is a wasteful number, since it uses less digits than its factorization.

11212211111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114498.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11212211111011 its reverse (11011111221211), we get a palindrome (22223322332222).

The spelling of 11212211111011 in words is "eleven trillion, two hundred twelve billion, two hundred eleven million, one hundred eleven thousand, eleven".