11112102121 has 8 divisors (see below), whose sum is σ = 11539065384. Its totient is φ = 10692564480.

The previous prime is 11112102077. The next prime is 11112102143. The reversal of 11112102121 is 12120121111.

It is a happy number.

11112102121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 262796521 + 10849305600 = 16211^2 + 104160^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11112102121 - 2²³ = 11103713513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112102181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853356 + ... + 1859341.

It is an arithmetic number, because the mean of its divisors is an integer number (1442383173).

Almost surely, 2^11112102121 is an apocalyptic number.

It is an amenable number.

11112102121 is a deficient number, since it is larger than the sum of its proper divisors (426963263).

11112102121 is an equidigital number, since it uses as much as digits as its factorization.

11112102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712811.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11112102121 its reverse (12120121111), we get a palindrome (23232223232).

The spelling of 11112102121 in words is "eleven billion, one hundred twelve million, one hundred two thousand, one hundred twenty-one".