1122111009 has 8 divisors (see below), whose sum is σ = 1662386720. Its totient is φ = 748073988.

The previous prime is 1122110989. The next prime is 1122111013. The reversal of 1122111009 is 9001112211.

It is a happy number.

It is not a de Polignac number, because 1122111009 - 2²⁷ = 987893281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122110982 and 1122111000.

It is not an unprimeable number, because it can be changed into a prime (1122111019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20779807 + ... + 20779860.

It is an arithmetic number, because the mean of its divisors is an integer number (207798340).

Almost surely, 2^1122111009 is an apocalyptic number.

It is an amenable number.

1122111009 is a deficient number, since it is larger than the sum of its proper divisors (540275711).

1122111009 is an equidigital number, since it uses as much as digits as its factorization.

1122111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41559676 (or 41559670 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1122111009 is about 33497.9254432271. The cubic root of 1122111009 is about 1039.1508752626.

The spelling of 1122111009 in words is "one billion, one hundred twenty-two million, one hundred eleven thousand, nine".