11211210110111 has 4 divisors (see below), whose sum is σ = 12230411029224. Its totient is φ = 10192009191000.

The previous prime is 11211210110069. The next prime is 11211210110129. The reversal of 11211210110111 is 11101101211211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11211210110111 - 2¹⁰ = 11211210109087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211210110141) 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 3 ways as a sum of consecutive naturals, for example, 509600459540 + ... + 509600459561.

It is an arithmetic number, because the mean of its divisors is an integer number (3057602757306).

Almost surely, 2^{11211210110111} is an apocalyptic number.

11211210110111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11211210110111 is a deficient number, since it is larger than the sum of its proper divisors (1019200919113).

11211210110111 is a wasteful number, since it uses less digits than its factorization.

11211210110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019200919112.

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

Adding to 11211210110111 its reverse (11101101211211), we get a palindrome (22312311321322).

The spelling of 11211210110111 in words is "eleven trillion, two hundred eleven billion, two hundred ten million, one hundred ten thousand, one hundred eleven".