100101100100 has 72 divisors (see below), whose sum is σ = 219403144800. Its totient is φ = 39638437120.

The previous prime is 100101100091. The next prime is 100101100103. The reversal of 100101100100 is 1001101001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (100101100103) 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 23 ways as a sum of consecutive naturals, for example, 22457072 + ... + 22461528.

It is an arithmetic number, because the mean of its divisors is an integer number (3047265900).

Almost surely, 2^100101100100 is an apocalyptic number.

100101100100 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 100101100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109701572400).

100101100100 is an abundant number, since it is smaller than the sum of its proper divisors (119302044700).

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

100101100100 is a wasteful number, since it uses less digits than its factorization.

100101100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677 (or 6670 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 100101100100 its reverse (1001101001), we get a palindrome (101102201101).

Subtracting from 100101100100 its reverse (1001101001), we obtain a palindrome (99099999099).

The spelling of 100101100100 in words is "one hundred billion, one hundred one million, one hundred thousand, one hundred".