111100211101020 has 96 divisors (see below), whose sum is σ = 311233465327680. Its totient is φ = 29612167004160.

The previous prime is 111100211100973. The next prime is 111100211101093. The reversal of 111100211101020 is 20101112001111.

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 = 111100211100987 and 111100211101005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1106955640 + ... + 1107056000.

It is an arithmetic number, because the mean of its divisors is an integer number (3242015263830).

Almost surely, 2^{111100211101020} is an apocalyptic number.

111100211101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100211101020 is an abundant number, since it is smaller than the sum of its proper divisors (200133254226660).

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

111100211101020 is a wasteful number, since it uses less digits than its factorization.

111100211101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109255 (or 109253 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111100211101020 its reverse (20101112001111), we get a palindrome (131201323102131).

Subtracting from 111100211101020 its reverse (20101112001111), we obtain a palindrome (90999099099909).

The spelling of 111100211101020 in words is "one hundred eleven trillion, one hundred billion, two hundred eleven million, one hundred one thousand, twenty".