1101112200 has 72 divisors (see below), whose sum is σ = 3697907850. Its totient is φ = 293629440.

The previous prime is 1101112163. The next prime is 1101112231. The reversal of 1101112200 is 22111011.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 917726436 + 183385764 = 30294^2 + 13542^2 .

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

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 304065 + ... + 307664.

Almost surely, 2^1101112200 is an apocalyptic number.

1101112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101112200 is an abundant number, since it is smaller than the sum of its proper divisors (2596795650).

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

1101112200 is a wasteful number, since it uses less digits than its factorization.

1101112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611751 (or 611739 counting only the distinct ones).

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

The square root of 1101112200 is about 33183.0107133153. The cubic root of 1101112200 is about 1032.6279079462.

Adding to 1101112200 its reverse (22111011), we get a palindrome (1123223211).

The spelling of 1101112200 in words is "one billion, one hundred one million, one hundred twelve thousand, two hundred".