100120000100 has 36 divisors (see below), whose sum is σ = 219183083364. Its totient is φ = 39693588480.

The previous prime is 100120000087. The next prime is 100120000111. The reversal of 100120000100 is 1000021001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10643636224 + 89476363876 = 103168^2 + 299126^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4418789 + ... + 4441388.

Almost surely, 2^100120000100 is an apocalyptic number.

100120000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120000100 is an abundant number, since it is smaller than the sum of its proper divisors (119063083264).

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

100120000100 is a wasteful number, since it uses less digits than its factorization.

100120000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8860304 (or 8860297 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 100120000100 its reverse (1000021001), we get a palindrome (101120021101).

The spelling of 100120000100 in words is "one hundred billion, one hundred twenty million, one hundred", and thus it is an aban number.