100111010220 has 144 divisors (see below), whose sum is σ = 327385487520. Its totient is φ = 24615871488.

The previous prime is 100111010177. The next prime is 100111010239. The reversal of 100111010220 is 22010111001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2169751 + ... + 2215409.

It is an arithmetic number, because the mean of its divisors is an integer number (2273510330).

Almost surely, 2^100111010220 is an apocalyptic number.

100111010220 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 100111010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163692743760).

100111010220 is an abundant number, since it is smaller than the sum of its proper divisors (227274477300).

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

100111010220 is a wasteful number, since it uses less digits than its factorization.

100111010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46624 (or 46619 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100111010220 its reverse (22010111001), we get a palindrome (122121121221).

The spelling of 100111010220 in words is "one hundred billion, one hundred eleven million, ten thousand, two hundred twenty".