11102121112111 has 4 divisors (see below), whose sum is σ = 11102132093272. Its totient is φ = 11102110130952.

The previous prime is 11102121112099. The next prime is 11102121112153. The reversal of 11102121112111 is 11121112120111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11102121112111 - 2²³ = 11102112723503 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 (11102121116111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800685 + ... + 6053878.

It is an arithmetic number, because the mean of its divisors is an integer number (2775533023318).

Almost surely, 2^{11102121112111} is an apocalyptic number.

11102121112111 is a deficient number, since it is larger than the sum of its proper divisors (10981161).

11102121112111 is an equidigital number, since it uses as much as digits as its factorization.

11102121112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10981160.

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

Adding to 11102121112111 its reverse (11121112120111), we get a palindrome (22223233232222).

The spelling of 11102121112111 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".