100021020020 has 48 divisors (see below), whose sum is σ = 210860017536. Its totient is φ = 39853296000.

The previous prime is 100021020013. The next prime is 100021020041. The reversal of 100021020020 is 20020120001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5809625 + ... + 5826815.

It is an arithmetic number, because the mean of its divisors is an integer number (4392917032).

Almost surely, 2^100021020020 is an apocalyptic number.

100021020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021020020 is an abundant number, since it is smaller than the sum of its proper divisors (110838997516).

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

100021020020 is a wasteful number, since it uses less digits than its factorization.

100021020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18312 (or 18310 counting only the distinct ones).

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

Adding to 100021020020 its reverse (20020120001), we get a palindrome (120041140021).

The spelling of 100021020020 in words is "one hundred billion, twenty-one million, twenty thousand, twenty".