1121113009 has 4 divisors (see below), whose sum is σ = 1122499620. Its totient is φ = 1119726400.

The previous prime is 1121113003. The next prime is 1121113033. The reversal of 1121113009 is 9003111211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9003111211 = 1877 ⋅4796543.

It can be written as a sum of positive squares in 2 ways, for example, as 456762384 + 664350625 = 21372^2 + 25775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121113009 - 2⁹ = 1121112497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121113003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692092 + ... + 693709.

It is an arithmetic number, because the mean of its divisors is an integer number (280624905).

Almost surely, 2^1121113009 is an apocalyptic number.

It is an amenable number.

1121113009 is a deficient number, since it is larger than the sum of its proper divisors (1386611).

1121113009 is an equidigital number, since it uses as much as digits as its factorization.

1121113009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386610.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1121113009 is about 33483.0256846660. The cubic root of 1121113009 is about 1038.8427119963.

The spelling of 1121113009 in words is "one billion, one hundred twenty-one million, one hundred thirteen thousand, nine".