2001200000100 has 144 divisors (see below), whose sum is σ = 6778699218816. Its totient is φ = 446260608000.

The previous prime is 2001200000099. The next prime is 2001200000147. The reversal of 2001200000100 is 10000021002.

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 (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11535271 + ... + 11707470.

Almost surely, 2^{2001200000100} is an apocalyptic number.

2001200000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001200000100 is an abundant number, since it is smaller than the sum of its proper divisors (4777499218716).

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

2001200000100 is a wasteful number, since it uses less digits than its factorization.

2001200000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23242806 (or 23242799 counting only the distinct ones).

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

Adding to 2001200000100 its reverse (10000021002), we get a palindrome (2011200021102).

The spelling of 2001200000100 in words is "two trillion, one billion, two hundred million, one hundred", and thus it is an aban number.