1121115320 has 64 divisors (see below), whose sum is σ = 2876368320. Its totient is φ = 389597184.

The previous prime is 1121115319. The next prime is 1121115343. The reversal of 1121115320 is 235111211.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 54572 + ... + 72251.

It is an arithmetic number, because the mean of its divisors is an integer number (44943255).

Almost surely, 2^1121115320 is an apocalyptic number.

1121115320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121115320 is an abundant number, since it is smaller than the sum of its proper divisors (1755253000).

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

1121115320 is a wasteful number, since it uses less digits than its factorization.

1121115320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126864 (or 126860 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1121115320 is about 33483.0601946716. The cubic root of 1121115320 is about 1038.8434258000.

Adding to 1121115320 its reverse (235111211), we get a palindrome (1356226531).

The spelling of 1121115320 in words is "one billion, one hundred twenty-one million, one hundred fifteen thousand, three hundred twenty".