111120021110 has 128 divisors (see below), whose sum is σ = 253272489984. Its totient is φ = 34224353280.

The previous prime is 111120021109. The next prime is 111120021121. The reversal of 111120021110 is 11120021111.

It is a junction number, because it is equal to n+sod(n) for n = 111120021091 and 111120021100.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2672339 + ... + 2713601.

It is an arithmetic number, because the mean of its divisors is an integer number (1978691328).

Almost surely, 2^111120021110 is an apocalyptic number.

111120021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111120021110 is an abundant number, since it is smaller than the sum of its proper divisors (142152468874).

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

111120021110 is a wasteful number, since it uses less digits than its factorization.

111120021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41398.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111120021110 its reverse (11120021111), we get a palindrome (122240042221).

Subtracting from 111120021110 its reverse (11120021111), we obtain a palindrome (99999999999).

The spelling of 111120021110 in words is "one hundred eleven billion, one hundred twenty million, twenty-one thousand, one hundred ten".