1121041200 has 240 divisors, whose sum is σ = 3836004480. Its totient is φ = 278876160.

The previous prime is 1121041193. The next prime is 1121041219. The reversal of 1121041200 is 21401211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3651447 + ... + 3651753.

It is an arithmetic number, because the mean of its divisors is an integer number (15983352).

Almost surely, 2^1121041200 is an apocalyptic number.

1121041200 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 1121041200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918002240).

1121041200 is an abundant number, since it is smaller than the sum of its proper divisors (2714963280).

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

1121041200 is a wasteful number, since it uses less digits than its factorization.

1121041200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1121041200 is about 33481.9533480351. The cubic root of 1121041200 is about 1038.8205317021.

Adding to 1121041200 its reverse (21401211), we get a palindrome (1142442411).

The spelling of 1121041200 in words is "one billion, one hundred twenty-one million, forty-one thousand, two hundred".