20012000100 has 36 divisors (see below), whose sum is σ = 57901387824. Its totient is φ = 5336533280.

The previous prime is 20012000081. The next prime is 20012000161. The reversal of 20012000100 is 100021002.

It is a happy number.

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 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 11 ways as a sum of consecutive naturals, for example, 33353034 + ... + 33353633.

It is an arithmetic number, because the mean of its divisors is an integer number (1608371884).

Almost surely, 2^20012000100 is an apocalyptic number.

20012000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012000100 is an abundant number, since it is smaller than the sum of its proper divisors (37889387724).

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

20012000100 is a wasteful number, since it uses less digits than its factorization.

20012000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66706684 (or 66706677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20012000100 its reverse (100021002), we get a palindrome (20112021102).

The spelling of 20012000100 in words is "twenty billion, twelve million, one hundred", and thus it is an aban number.