100109900000 has 144 divisors (see below), whose sum is σ = 268746705360. Its totient is φ = 36403200000.

The previous prime is 100109899991. The next prime is 100109900087. The reversal of 100109900000 is 9901001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054496 + ... + 1145504.

It is an arithmetic number, because the mean of its divisors is an integer number (1866296565).

Almost surely, 2^100109900000 is an apocalyptic number.

100109900000 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 100109900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134373352680).

100109900000 is an abundant number, since it is smaller than the sum of its proper divisors (168636805360).

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

100109900000 is an frugal number, since it uses more digits than its factorization.

100109900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91055 (or 91027 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 20.

The spelling of 100109900000 in words is "one hundred billion, one hundred nine million, nine hundred thousand".