20201211200 has 42 divisors (see below), whose sum is σ = 49707609246. Its totient is φ = 8080483840.

The previous prime is 20201211169. The next prime is 20201211203. The reversal of 20201211200 is 211210202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 146119744 + 20055091456 = 12088^2 + 141616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201211203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6311279 + ... + 6314478.

Almost surely, 2^20201211200 is an apocalyptic number.

20201211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201211200 is an abundant number, since it is smaller than the sum of its proper divisors (29506398046).

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

20201211200 is a wasteful number, since it uses less digits than its factorization.

20201211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625779 (or 12625764 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20201211200 its reverse (211210202), we get a palindrome (20412421402).

The spelling of 20201211200 in words is "twenty billion, two hundred one million, two hundred eleven thousand, two hundred".