100202220108 has 72 divisors (see below), whose sum is σ = 263339622000. Its totient is φ = 32099696640.

The previous prime is 100202220071. The next prime is 100202220109. The reversal of 100202220108 is 801022202001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100202220109) 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, 407733 + ... + 605516.

It is an arithmetic number, because the mean of its divisors is an integer number (3657494750).

Almost surely, 2^100202220108 is an apocalyptic number.

100202220108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

100202220108 is an abundant number, since it is smaller than the sum of its proper divisors (163137401892).

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

100202220108 is a wasteful number, since it uses less digits than its factorization.

100202220108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013367 (or 1013362 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100202220108 its reverse (801022202001), we get a palindrome (901224422109).

The spelling of 100202220108 in words is "one hundred billion, two hundred two million, two hundred twenty thousand, one hundred eight".