100021203200 has 108 divisors (see below), whose sum is σ = 249883537680. Its totient is φ = 39634298880.

The previous prime is 100021203173. The next prime is 100021203223. The reversal of 100021203200 is 2302120001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611771 + ... + 757829.

It is an arithmetic number, because the mean of its divisors is an integer number (2313736460).

Almost surely, 2^100021203200 is an apocalyptic number.

100021203200 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 100021203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124941768840).

100021203200 is an abundant number, since it is smaller than the sum of its proper divisors (149862334480).

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

100021203200 is a wasteful number, since it uses less digits than its factorization.

100021203200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146192 (or 146173 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 100021203200 its reverse (2302120001), we get a palindrome (102323323201).

The spelling of 100021203200 in words is "one hundred billion, twenty-one million, two hundred three thousand, two hundred".