12202009 has 4 divisors (see below), whose sum is σ = 12844240. Its totient is φ = 11559780.

The previous prime is 12202007. The next prime is 12202019. The reversal of 12202009 is 90020221.

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.

It is a cyclic number.

It is not a de Polignac number, because 12202009 - 2¹ = 12202007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201983 and 12202001.

It is not an unprimeable number, because it can be changed into a prime (12202007) 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, 321087 + ... + 321124.

It is an arithmetic number, because the mean of its divisors is an integer number (3211060).

Almost surely, 2^12202009 is an apocalyptic number.

12202009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12202009 is a deficient number, since it is larger than the sum of its proper divisors (642231).

12202009 is an equidigital number, since it uses as much as digits as its factorization.

12202009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642230.

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

The square root of 12202009 is about 3493.1374149896. The cubic root of 12202009 is about 230.2203873698.

The spelling of 12202009 in words is "twelve million, two hundred two thousand, nine".