20111210200 has 24 divisors (see below), whose sum is σ = 46758564180. Its totient is φ = 8044484000.

The previous prime is 20111210131. The next prime is 20111210233. The reversal of 20111210200 is 201211102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 50277826 + ... + 50278225.

Almost surely, 2^20111210200 is an apocalyptic number.

20111210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111210200 is an abundant number, since it is smaller than the sum of its proper divisors (26647353980).

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

20111210200 is a wasteful number, since it uses less digits than its factorization.

20111210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100556067 (or 100556058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20111210200 its reverse (201211102), we get a palindrome (20312421302).

The spelling of 20111210200 in words is "twenty billion, one hundred eleven million, two hundred ten thousand, two hundred".