11211100200 has 72 divisors (see below), whose sum is σ = 37650617550. Its totient is φ = 2989626240.

The previous prime is 11211100181. The next prime is 11211100249. The reversal of 11211100200 is 200111211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10908131364 + 302968836 = 104442^2 + 17406^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3112395 + ... + 3115994.

Almost surely, 2^11211100200 is an apocalyptic number.

11211100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211100200 is an abundant number, since it is smaller than the sum of its proper divisors (26439517350).

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

11211100200 is a wasteful number, since it uses less digits than its factorization.

11211100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228411 (or 6228399 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11211100200 its reverse (200111211), we get a palindrome (11411211411).

The spelling of 11211100200 in words is "eleven billion, two hundred eleven million, one hundred thousand, two hundred".