100921100 has 36 divisors (see below), whose sum is σ = 250286064. Its totient is φ = 34601280.

The previous prime is 100921099. The next prime is 100921147. The reversal of 100921100 is 1129001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71387 + ... + 72786.

Almost surely, 2^100921100 is an apocalyptic number.

100921100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100921100 is an abundant number, since it is smaller than the sum of its proper divisors (149364964).

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

100921100 is a wasteful number, since it uses less digits than its factorization.

100921100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144194 (or 144187 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 100921100 is about 10045.9494324827. The cubic root of 100921100 is about 465.5796525061.

The spelling of 100921100 in words is "one hundred million, nine hundred twenty-one thousand, one hundred".