1121130444 has 48 divisors (see below), whose sum is σ = 2991650816. Its totient is φ = 320112000.

The previous prime is 1121130389. The next prime is 1121130487. The reversal of 1121130444 is 4440311211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1121130444.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160464 + ... + 167304.

Almost surely, 2^1121130444 is an apocalyptic number.

1121130444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1121130444 is an abundant number, since it is smaller than the sum of its proper divisors (1870520372).

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

1121130444 is a wasteful number, since it uses less digits than its factorization.

1121130444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8806 (or 8804 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1121130444 is about 33483.2860394556. The cubic root of 1121130444 is about 1038.8480971593.

Adding to 1121130444 its reverse (4440311211), we get a palindrome (5561441655).

The spelling of 1121130444 in words is "one billion, one hundred twenty-one million, one hundred thirty thousand, four hundred forty-four".