100021112008 has 32 divisors (see below), whose sum is σ = 198785323800. Its totient is φ = 47018033152.

The previous prime is 100021112003. The next prime is 100021112033. The reversal of 100021112008 is 800211120001.

It can be written as a sum of positive squares in 4 ways, for example, as 91892647044 + 8128464964 = 303138^2 + 90158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100021111982 and 100021112000.

It is not an unprimeable number, because it can be changed into a prime (100021112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269485 + ... + 522172.

Almost surely, 2^100021112008 is an apocalyptic number.

It is an amenable number.

100021112008 is a deficient number, since it is larger than the sum of its proper divisors (98764211792).

100021112008 is a wasteful number, since it uses less digits than its factorization.

100021112008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792609 (or 792605 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100021112008 its reverse (800211120001), we get a palindrome (900232232009).

The spelling of 100021112008 in words is "one hundred billion, twenty-one million, one hundred twelve thousand, eight".