20120101000200 has 144 divisors (see below), whose sum is σ = 67572396964800. Its totient is φ = 5365170403200.

The previous prime is 20120101000193. The next prime is 20120101000271. The reversal of 20120101000200 is 200010102102.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 35 ways as a sum of consecutive naturals, for example, 54953341 + ... + 55318259.

It is an arithmetic number, because the mean of its divisors is an integer number (469252756700).

Almost surely, 2^{20120101000200} is an apocalyptic number.

20120101000200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120101000200 is an abundant number, since it is smaller than the sum of its proper divisors (47452295964600).

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

20120101000200 is a wasteful number, since it uses less digits than its factorization.

20120101000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395572 (or 395560 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20120101000200 its reverse (200010102102), we get a palindrome (20320111102302).

The spelling of 20120101000200 in words is "twenty trillion, one hundred twenty billion, one hundred one million, two hundred", and thus it is an aban number.