1121032305 has 80 divisors (see below), whose sum is σ = 2113461504. Its totient is φ = 567388800.

The previous prime is 1121032303. The next prime is 1121032331. The reversal of 1121032305 is 5032301211.

It is not a de Polignac number, because 1121032305 - 2¹ = 1121032303 is a prime.

It is a super-2 number, since 2×1121032305² = 2513426857707226050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121032301) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 1406167 + ... + 1406963.

Almost surely, 2^1121032305 is an apocalyptic number.

1121032305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121032305 is a deficient number, since it is larger than the sum of its proper divisors (992429199).

1121032305 is a wasteful number, since it uses less digits than its factorization.

1121032305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1121032305 is about 33481.8205150198. The cubic root of 1121032305 is about 1038.8177841572.

Adding to 1121032305 its reverse (5032301211), we get a palindrome (6153333516).

The spelling of 1121032305 in words is "one billion, one hundred twenty-one million, thirty-two thousand, three hundred five".