1122209 has 4 divisors (see below), whose sum is σ = 1224240. Its totient is φ = 1020180.

The previous prime is 1122181. The next prime is 1122227. The reversal of 1122209 is 9022211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9022211 = 11 ⋅820201.

It is a cyclic number.

It is not a de Polignac number, because 1122209 - 2¹² = 1118113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122259) 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, 50999 + ... + 51020.

It is an arithmetic number, because the mean of its divisors is an integer number (306060).

2^1122209 is an apocalyptic number.

It is an amenable number.

1122209 is a deficient number, since it is larger than the sum of its proper divisors (102031).

1122209 is a wasteful number, since it uses less digits than its factorization.

1122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102030.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1122209 is about 1059.3436647283. The cubic root of 1122209 is about 103.9181123152.

It can be divided in two parts, 1122 and 209, that added together give a palindrome (1331).

The spelling of 1122209 in words is "one million, one hundred twenty-two thousand, two hundred nine".