1199200100 has 72 divisors (see below), whose sum is σ = 2978976000. Its totient is φ = 410469120.

The previous prime is 1199200099. The next prime is 1199200109. The reversal of 1199200100 is 10029911.

It is not an unprimeable number, because it can be changed into a prime (1199200109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 598901 + ... + 600899.

Almost surely, 2^1199200100 is an apocalyptic number.

1199200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489488000).

1199200100 is an abundant number, since it is smaller than the sum of its proper divisors (1779775900).

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

1199200100 is a wasteful number, since it uses less digits than its factorization.

1199200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1199200100 is about 34629.4686647081. The cubic root of 1199200100 is about 1062.4223998689.

The spelling of 1199200100 in words is "one billion, one hundred ninety-nine million, two hundred thousand, one hundred".