111100210120020 has 96 divisors (see below), whose sum is σ = 339808940102016. Its totient is φ = 26897805043200.

The previous prime is 111100210119991. The next prime is 111100210120021. The reversal of 111100210120020 is 20021012001111.

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 = 111100210119978 and 111100210120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100210120021) 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 31 ways as a sum of consecutive naturals, for example, 110685091 + ... + 111684330.

It is an arithmetic number, because the mean of its divisors is an integer number (3539676459396).

Almost surely, 2^{111100210120020} is an apocalyptic number.

111100210120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100210120020 is an abundant number, since it is smaller than the sum of its proper divisors (228708729981996).

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

111100210120020 is a wasteful number, since it uses less digits than its factorization.

111100210120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222370201 (or 222370199 counting only the distinct ones).

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

Adding to 111100210120020 its reverse (20021012001111), we get a palindrome (131121222121131).

The spelling of 111100210120020 in words is "one hundred eleven trillion, one hundred billion, two hundred ten million, one hundred twenty thousand, twenty".