11120111100021 has 64 divisors (see below), whose sum is σ = 19366484115456. Its totient is φ = 5506898443200.

The previous prime is 11120111099989. The next prime is 11120111100067. The reversal of 11120111100021 is 12000111102111.

It is not a de Polignac number, because 11120111100021 - 2⁵ = 11120111099989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120111100421) 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 63 ways as a sum of consecutive naturals, for example, 11108805 + ... + 12068378.

It is an arithmetic number, because the mean of its divisors is an integer number (302601314304).

Almost surely, 2^{11120111100021} is an apocalyptic number.

11120111100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11120111100021 is a deficient number, since it is larger than the sum of its proper divisors (8246373015435).

11120111100021 is a wasteful number, since it uses less digits than its factorization.

11120111100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23177302.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11120111100021 its reverse (12000111102111), we get a palindrome (23120222202132).

The spelling of 11120111100021 in words is "eleven trillion, one hundred twenty billion, one hundred eleven million, one hundred thousand, twenty-one".