111100021110 has 48 divisors (see below), whose sum is σ = 311080062384. Its totient is φ = 27347697216.

The previous prime is 111100021063. The next prime is 111100021121. The reversal of 111100021110 is 11120001111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111100021092 and 111100021101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47477472 + ... + 47479811.

It is an arithmetic number, because the mean of its divisors is an integer number (6480834633).

Almost surely, 2^111100021110 is an apocalyptic number.

111100021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111100021110 is an abundant number, since it is smaller than the sum of its proper divisors (199980041274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111100021110 is a wasteful number, since it uses less digits than its factorization.

111100021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94957309 (or 94957306 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111100021110 its reverse (11120001111), we get a palindrome (122220022221).

The spelling of 111100021110 in words is "one hundred eleven billion, one hundred million, twenty-one thousand, one hundred ten".