12202109 has 4 divisors (see below), whose sum is σ = 12247740. Its totient is φ = 12156480.

The previous prime is 12202097. The next prime is 12202117. The reversal of 12202109 is 90120221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 334084 + 11868025 = 578^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202109 - 2²⁰ = 11153533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22412 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (3061935).

Almost surely, 2^12202109 is an apocalyptic number.

It is an amenable number.

12202109 is a deficient number, since it is larger than the sum of its proper divisors (45631).

12202109 is an equidigital number, since it uses as much as digits as its factorization.

12202109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45630.

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

The square root of 12202109 is about 3493.1517287401. The cubic root of 12202109 is about 230.2210162820.

The spelling of 12202109 in words is "twelve million, two hundred two thousand, one hundred nine".