1121243320 has 16 divisors (see below), whose sum is σ = 2522797560. Its totient is φ = 448497312.

The previous prime is 1121243293. The next prime is 1121243339. The reversal of 1121243320 is 233421211.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 14015502 + ... + 14015581.

Almost surely, 2^1121243320 is an apocalyptic number.

1121243320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121243320 is an abundant number, since it is smaller than the sum of its proper divisors (1401554240).

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

1121243320 is a wasteful number, since it uses less digits than its factorization.

1121243320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28031094 (or 28031090 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1121243320 is about 33484.9715544153. The cubic root of 1121243320 is about 1038.8829599127.

Adding to 1121243320 its reverse (233421211), we get a palindrome (1354664531).

The spelling of 1121243320 in words is "one billion, one hundred twenty-one million, two hundred forty-three thousand, three hundred twenty".