111102110020 has 48 divisors (see below), whose sum is σ = 255666313728. Its totient is φ = 40219580160.

The previous prime is 111102109999. The next prime is 111102110027. The reversal of 111102110020 is 20011201111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111102109979 and 111102110006.

It is not an unprimeable number, because it can be changed into a prime (111102110027) 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, 1083249 + ... + 1181368.

It is an arithmetic number, because the mean of its divisors is an integer number (5326381536).

Almost surely, 2^111102110020 is an apocalyptic number.

111102110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111102110020 is an abundant number, since it is smaller than the sum of its proper divisors (144564203708).

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

111102110020 is a wasteful number, since it uses less digits than its factorization.

111102110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264860 (or 2264858 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111102110020 its reverse (20011201111), we get a palindrome (131113311131).

It can be divided in two parts, 111102 and 110020, that added together give a palindrome (221122).

The spelling of 111102110020 in words is "one hundred eleven billion, one hundred two million, one hundred ten thousand, twenty".