100111122112020 has 24 divisors (see below), whose sum is σ = 280311141913824. Its totient is φ = 26696299229856.

The previous prime is 100111122111997. The next prime is 100111122112033. The reversal of 100111122112020 is 20211221111001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834259350874 + ... + 834259350993.

It is an arithmetic number, because the mean of its divisors is an integer number (11679630913076).

Almost surely, 2^{100111122112020} is an apocalyptic number.

100111122112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111122112020 is an abundant number, since it is smaller than the sum of its proper divisors (180200019801804).

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

100111122112020 is a wasteful number, since it uses less digits than its factorization.

100111122112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668518701879 (or 1668518701877 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100111122112020 its reverse (20211221111001), we get a palindrome (120322343223021).

The spelling of 100111122112020 in words is "one hundred trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twelve thousand, twenty".