100011001020 has 96 divisors (see below), whose sum is σ = 338860827648. Its totient is φ = 21514970112.

The previous prime is 100011001009. The next prime is 100011001093. The reversal of 100011001020 is 20100110001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6996432 + ... + 7010711.

It is an arithmetic number, because the mean of its divisors is an integer number (3529800288).

Almost surely, 2^100011001020 is an apocalyptic number.

100011001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011001020 is an abundant number, since it is smaller than the sum of its proper divisors (238849826628).

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

100011001020 is a wasteful number, since it uses less digits than its factorization.

100011001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14007179 (or 14007177 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 100011001020 its reverse (20100110001), we get a palindrome (120111111021).

The spelling of 100011001020 in words is "one hundred billion, eleven million, one thousand, twenty".