100220208 has 80 divisors (see below), whose sum is σ = 286755456. Its totient is φ = 29905920.

The previous prime is 100220203. The next prime is 100220209. The reversal of 100220208 is 802022001.

It is not an unprimeable number, because it can be changed into a prime (100220203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33960 + ... + 36792.

Almost surely, 2^100220208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100220208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143377728).

100220208 is an abundant number, since it is smaller than the sum of its proper divisors (186535248).

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

100220208 is a wasteful number, since it uses less digits than its factorization.

100220208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2916 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 100220208 is about 10011.0043452193. The cubic root of 100220208 is about 464.4993385782.

Adding to 100220208 its reverse (802022001), we get a palindrome (902242209).

The spelling of 100220208 in words is "one hundred million, two hundred twenty thousand, two hundred eight".