100021112 has 16 divisors (see below), whose sum is σ = 195693840. Its totient is φ = 47836096.

The previous prime is 100021093. The next prime is 100021121. The reversal of 100021112 is 211120001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 100021112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271613 + ... + 271980.

It is an arithmetic number, because the mean of its divisors is an integer number (12230865).

Almost surely, 2^100021112 is an apocalyptic number.

It is an amenable number.

100021112 is a deficient number, since it is larger than the sum of its proper divisors (95672728).

100021112 is a wasteful number, since it uses less digits than its factorization.

100021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543622 (or 543618 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 100021112 is about 10001.0555442913. The cubic root of 100021112 is about 464.1915454707.

Adding to 100021112 its reverse (211120001), we get a palindrome (311141113).

The spelling of 100021112 in words is "one hundred million, twenty-one thousand, one hundred twelve".