11121100212111 has 32 divisors (see below), whose sum is σ = 15337388544000. Its totient is φ = 7162445917440.

The previous prime is 11121100212041. The next prime is 11121100212121. The reversal of 11121100212111 is 11121200112111.

It is not a de Polignac number, because 11121100212111 - 2¹¹ = 11121100210063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121100212121) 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 31 ways as a sum of consecutive naturals, for example, 10055091 + ... + 11106171.

It is an arithmetic number, because the mean of its divisors is an integer number (479293392000).

Almost surely, 2^{11121100212111} is an apocalyptic number.

11121100212111 is a deficient number, since it is larger than the sum of its proper divisors (4216288331889).

11121100212111 is a wasteful number, since it uses less digits than its factorization.

11121100212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051799.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11121100212111 its reverse (11121200112111), we get a palindrome (22242300324222).

The spelling of 11121100212111 in words is "eleven trillion, one hundred twenty-one billion, one hundred million, two hundred twelve thousand, one hundred eleven".