1202209 has 4 divisors (see below), whose sum is σ = 1204416. Its totient is φ = 1200004.

The previous prime is 1202191. The next prime is 1202219. The reversal of 1202209 is 9022021.

It is a happy number.

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: 9022021 = 2801 ⋅3221.

It is a cyclic number.

It is not a de Polignac number, because 1202209 - 2⁷ = 1202081 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202192 and 1202201.

It is not an unprimeable number, because it can be changed into a prime (1202219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (301104).

2^1202209 is an apocalyptic number.

It is an amenable number.

1202209 is a deficient number, since it is larger than the sum of its proper divisors (2207).

1202209 is an equidigital number, since it uses as much as digits as its factorization.

1202209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1202209 is about 1096.4529173658. The cubic root of 1202209 is about 106.3310228586.

The spelling of 1202209 in words is "one million, two hundred two thousand, two hundred nine".