12013109 has 2 divisors, whose sum is σ = 12013110. Its totient is φ = 12013108.

The previous prime is 12013103. The next prime is 12013117. The reversal of 12013109 is 90131021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 3073009 = 2990^2 + 1753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013109 is a prime.

It is a super-3 number, since 3×12013109³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006554 + 6006555.

It is an arithmetic number, because the mean of its divisors is an integer number (6006555).

Almost surely, 2^12013109 is an apocalyptic number.

It is an amenable number.

12013109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013109 is an equidigital number, since it uses as much as digits as its factorization.

12013109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 12013109 is about 3465.9932198433. The cubic root of 12013109 is about 229.0261851664.

The spelling of 12013109 in words is "twelve million, thirteen thousand, one hundred nine".