1121050305 has 12 divisors (see below), whose sum is σ = 1943153940. Its totient is φ = 597893472.

The previous prime is 1121050297. The next prime is 1121050321. The reversal of 1121050305 is 5030501211.

It can be written as a sum of positive squares in 2 ways, for example, as 820478736 + 300571569 = 28644^2 + 17337^2 .

It is not a de Polignac number, because 1121050305 - 2³ = 1121050297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12456070 + ... + 12456159.

It is an arithmetic number, because the mean of its divisors is an integer number (161929495).

Almost surely, 2^1121050305 is an apocalyptic number.

1121050305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121050305 is a deficient number, since it is larger than the sum of its proper divisors (822103635).

1121050305 is a wasteful number, since it uses less digits than its factorization.

1121050305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24912240 (or 24912237 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1121050305 is about 33482.0893165286. The cubic root of 1121050305 is about 1038.8233440981.

Adding to 1121050305 its reverse (5030501211), we get a palindrome (6151551516).

It can be divided in two parts, 11 and 21050305, that added together give a triangular number (21050316 = T₆₄₈₈).

The spelling of 1121050305 in words is "one billion, one hundred twenty-one million, fifty thousand, three hundred five".