100011000020 has 24 divisors (see below), whose sum is σ = 210840321384. Its totient is φ = 39848738816.

The previous prime is 100010999951. The next prime is 100011000059. The reversal of 100011000020 is 20000110001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37559990416 + 62451009604 = 193804^2 + 249902^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 100010999968 and 100011000013.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9723557 + ... + 9733836.

It is an arithmetic number, because the mean of its divisors is an integer number (8785013391).

Almost surely, 2^100011000020 is an apocalyptic number.

100011000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011000020 is an abundant number, since it is smaller than the sum of its proper divisors (110829321364).

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

100011000020 is a wasteful number, since it uses less digits than its factorization.

100011000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457659 (or 19457657 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 100011000020 its reverse (20000110001), we get a palindrome (120011110021).

The spelling of 100011000020 in words is "one hundred billion, eleven million, twenty", and thus it is an aban number.