11210211111 has 32 divisors (see below), whose sum is σ = 17337369600. Its totient is φ = 6367585280.

The previous prime is 11210211107. The next prime is 11210211113. The reversal of 11210211111 is 11111201211.

It is not a de Polignac number, because 11210211111 - 2² = 11210211107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210211113) 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 in 31 ways as a sum of consecutive naturals, for example, 92275 + ... + 175883.

It is an arithmetic number, because the mean of its divisors is an integer number (541792800).

Almost surely, 2^11210211111 is an apocalyptic number.

11210211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11210211111 is a deficient number, since it is larger than the sum of its proper divisors (6127158489).

11210211111 is a wasteful number, since it uses less digits than its factorization.

11210211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83879.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11210211111 its reverse (11111201211), we get a palindrome (22321412322).

The spelling of 11210211111 in words is "eleven billion, two hundred ten million, two hundred eleven thousand, one hundred eleven".