100001102020 has 12 divisors (see below), whose sum is σ = 210002314284. Its totient is φ = 40000440800.

The previous prime is 100001102017. The next prime is 100001102051. The reversal of 100001102020 is 20201100001.

It can be written as a sum of positive squares in 2 ways, for example, as 12347209924 + 87653892096 = 111118^2 + 296064^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100001101994 and 100001102012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500027531 + ... + 2500027570.

It is an arithmetic number, because the mean of its divisors is an integer number (17500192857).

Almost surely, 2^100001102020 is an apocalyptic number.

100001102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001102020 is an abundant number, since it is smaller than the sum of its proper divisors (110001212264).

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

100001102020 is a wasteful number, since it uses less digits than its factorization.

100001102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000055110 (or 5000055108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100001102020 its reverse (20201100001), we get a palindrome (120202202021).

The spelling of 100001102020 in words is "one hundred billion, one million, one hundred two thousand, twenty".