1121200 has 30 divisors (see below), whose sum is σ = 2694644. Its totient is φ = 448320.

The previous prime is 1121191. The next prime is 1121203. The reversal of 1121200 is 21211.

It is not an unprimeable number, because it can be changed into a prime (1121203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002 + ... + 1801.

2^1121200 is an apocalyptic number.

1121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121200 is an abundant number, since it is smaller than the sum of its proper divisors (1573444).

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

1121200 is a wasteful number, since it uses less digits than its factorization.

1121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1121200 is about 1058.8673193559. The cubic root of 1121200 is about 103.8869580423.

Adding to 1121200 its reverse (21211), we get a palindrome (1142411).

The spelling of 1121200 in words is "one million, one hundred twenty-one thousand, two hundred".