111102112020 has 192 divisors, whose sum is σ = 333906612480. Its totient is φ = 27519823872.

The previous prime is 111102111997. The next prime is 111102112031. The reversal of 111102112020 is 20211201111.

111102112020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111102111987 and 111102112005.

It is a congruent number.

It is an unprimeable number.

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, 14393202 + ... + 14400918.

It is an arithmetic number, because the mean of its divisors is an integer number (1739096940).

Almost surely, 2^111102112020 is an apocalyptic number.

111102112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111102112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166953306240).

111102112020 is an abundant number, since it is smaller than the sum of its proper divisors (222804500460).

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

111102112020 is a wasteful number, since it uses less digits than its factorization.

111102112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7994 (or 7992 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111102112020 its reverse (20211201111), we get a palindrome (131313313131).

The spelling of 111102112020 in words is "one hundred eleven billion, one hundred two million, one hundred twelve thousand, twenty".