100500112020 has 576 divisors, whose sum is σ = 378115799040. Its totient is φ = 19317657600.

The previous prime is 100500111979. The next prime is 100500112057. The reversal of 100500112020 is 20211005001.

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 = 100500111987 and 100500112005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 733577392 + ... + 733577528.

It is an arithmetic number, because the mean of its divisors is an integer number (656451040).

Almost surely, 2^100500112020 is an apocalyptic number.

100500112020 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 100500112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189057899520).

100500112020 is an abundant number, since it is smaller than the sum of its proper divisors (277615687020).

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

100500112020 is a wasteful number, since it uses less digits than its factorization.

100500112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

Adding to 100500112020 its reverse (20211005001), we get a palindrome (120711117021).

The spelling of 100500112020 in words is "one hundred billion, five hundred million, one hundred twelve thousand, twenty".