111000112020 has 192 divisors, whose sum is σ = 394830374400. Its totient is φ = 25360957440.

The previous prime is 111000112009. The next prime is 111000112033. The reversal of 111000112020 is 20211000111.

It is a happy number.

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 = 111000111993 and 111000112011.

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, 12579210 + ... + 12588030.

It is an arithmetic number, because the mean of its divisors is an integer number (2056408200).

Almost surely, 2^111000112020 is an apocalyptic number.

111000112020 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 111000112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197415187200).

111000112020 is an abundant number, since it is smaller than the sum of its proper divisors (283830262380).

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

111000112020 is a wasteful number, since it uses less digits than its factorization.

111000112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175 (or 12167 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111000112020 its reverse (20211000111), we get a palindrome (131211112131).

The spelling of 111000112020 in words is "one hundred eleven billion, one hundred twelve thousand, twenty".