1121000244 has 144 divisors (see below), whose sum is σ = 3339802368. Its totient is φ = 289965312.

The previous prime is 1121000219. The next prime is 1121000263. The reversal of 1121000244 is 4420001211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 403749 + ... + 406515.

It is an arithmetic number, because the mean of its divisors is an integer number (23193072).

Almost surely, 2^1121000244 is an apocalyptic number.

1121000244 is a gapful number since it is divisible by the number (14) 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 1121000244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669901184).

1121000244 is an abundant number, since it is smaller than the sum of its proper divisors (2218802124).

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

1121000244 is a wasteful number, since it uses less digits than its factorization.

1121000244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1121000244 is about 33481.3417293871. The cubic root of 1121000244 is about 1038.8078808284.

Adding to 1121000244 its reverse (4420001211), we get a palindrome (5541001455).

The spelling of 1121000244 in words is "one billion, one hundred twenty-one million, two hundred forty-four", and thus it is an aban number.