100021333100 has 72 divisors (see below), whose sum is σ = 233979638928. Its totient is φ = 36893433600.

The previous prime is 100021333037. The next prime is 100021333103. The reversal of 100021333100 is 1333120001.

It is a super-2 number, since 2×100021333100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100021333103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1257515 + ... + 1334685.

Almost surely, 2^100021333100 is an apocalyptic number.

100021333100 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 100021333100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116989819464).

100021333100 is an abundant number, since it is smaller than the sum of its proper divisors (133958305828).

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

100021333100 is a wasteful number, since it uses less digits than its factorization.

100021333100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78195 (or 78188 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 100021333100 its reverse (1333120001), we get a palindrome (101354453101).

The spelling of 100021333100 in words is "one hundred billion, twenty-one million, three hundred thirty-three thousand, one hundred".