12223109 has 2 divisors, whose sum is σ = 12223110. Its totient is φ = 12223108.

The previous prime is 12223087. The next prime is 12223139. The reversal of 12223109 is 90132221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 3940225 = 2878^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223109 - 2²⁰ = 11174533 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12223139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111554 + 6111555.

It is an arithmetic number, because the mean of its divisors is an integer number (6111555).

Almost surely, 2^12223109 is an apocalyptic number.

It is an amenable number.

12223109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223109 is an equidigital number, since it uses as much as digits as its factorization.

12223109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12223109 is about 3496.1563180155. The cubic root of 12223109 is about 230.3530117836.

The spelling of 12223109 in words is "twelve million, two hundred twenty-three thousand, one hundred nine".