1121033550 has 192 divisors, whose sum is σ = 3623768064. Its totient is φ = 222566400.

The previous prime is 1121033549. The next prime is 1121033561. The reversal of 1121033550 is 553301211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 229635 + ... + 234465.

It is an arithmetic number, because the mean of its divisors is an integer number (18873792).

Almost surely, 2^1121033550 is an apocalyptic number.

1121033550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121033550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811884032).

1121033550 is an abundant number, since it is smaller than the sum of its proper divisors (2502734514).

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

1121033550 is a wasteful number, since it uses less digits than its factorization.

1121033550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4883 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1121033550 is about 33481.8391071936. The cubic root of 1121033550 is about 1038.8181687217.

Adding to 1121033550 its reverse (553301211), we get a palindrome (1674334761).

The spelling of 1121033550 in words is "one billion, one hundred twenty-one million, thirty-three thousand, five hundred fifty".