11102112121 has 16 divisors (see below), whose sum is σ = 11785527936. Its totient is φ = 10436760576.

The previous prime is 11102112107. The next prime is 11102112127. The reversal of 11102112121 is 12121120111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11102112121 - 2⁹ = 11102111609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11102112127) 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 15 ways as a sum of consecutive naturals, for example, 353371 + ... + 383503.

It is an arithmetic number, because the mean of its divisors is an integer number (736595496).

Almost surely, 2^11102112121 is an apocalyptic number.

It is an amenable number.

11102112121 is a deficient number, since it is larger than the sum of its proper divisors (683415815).

11102112121 is a wasteful number, since it uses less digits than its factorization.

11102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30432.

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

Adding to 11102112121 its reverse (12121120111), we get a palindrome (23223232232).

The spelling of 11102112121 in words is "eleven billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".