1121232209 has 8 divisors (see below), whose sum is σ = 1133342400. Its totient is φ = 1109142000.

The previous prime is 1121232187. The next prime is 1121232239. The reversal of 1121232209 is 9022321211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121232209 - 2²⁴ = 1104454993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121232239) 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 7 ways as a sum of consecutive naturals, for example, 126092 + ... + 134690.

It is an arithmetic number, because the mean of its divisors is an integer number (141667800).

Almost surely, 2^1121232209 is an apocalyptic number.

It is an amenable number.

1121232209 is a deficient number, since it is larger than the sum of its proper divisors (12110191).

1121232209 is a wasteful number, since it uses less digits than its factorization.

1121232209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1121232209 is about 33484.8056437543. The cubic root of 1121232209 is about 1038.8795282857.

It can be divided in two parts, 112 and 1232209, that added together give a palindrome (1232321).

The spelling of 1121232209 in words is "one billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred nine".