1122009 has 24 divisors (see below), whose sum is σ = 1804992. Its totient is φ = 607200.

The previous prime is 1122001. The next prime is 1122029. The reversal of 1122009 is 9002211.

It is a happy number.

It is not a de Polignac number, because 1122009 - 2³ = 1122001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122001) 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 23 ways as a sum of consecutive naturals, for example, 11059 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (75208).

2^1122009 is an apocalyptic number.

It is an amenable number.

1122009 is a deficient number, since it is larger than the sum of its proper divisors (682983).

1122009 is a wasteful number, since it uses less digits than its factorization.

1122009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1122009 is about 1059.2492624496. The cubic root of 1122009 is about 103.9119385225.

The spelling of 1122009 in words is "one million, one hundred twenty-two thousand, nine".