20001012200 has 48 divisors (see below), whose sum is σ = 50079463980. Its totient is φ = 7384988160.

The previous prime is 20001012191. The next prime is 20001012203. The reversal of 20001012200 is 221010002.

It can be written as a sum of positive squares in 6 ways, for example, as 598193764 + 19402818436 = 24458^2 + 139294^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (20001012203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3843749 + ... + 3848948.

Almost surely, 2^20001012200 is an apocalyptic number.

20001012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001012200 is an abundant number, since it is smaller than the sum of its proper divisors (30078451780).

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

20001012200 is a wasteful number, since it uses less digits than its factorization.

20001012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692726 (or 7692717 counting only the distinct ones).

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

Adding to 20001012200 its reverse (221010002), we get a palindrome (20222022202).

The spelling of 20001012200 in words is "twenty billion, one million, twelve thousand, two hundred".