12132540109 has 2 divisors, whose sum is σ = 12132540110. Its totient is φ = 12132540108.

The previous prime is 12132540073. The next prime is 12132540131. The reversal of 12132540109 is 90104523121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9363465225 + 2769074884 = 96765^2 + 52622^2 .

It is an emirp because it is prime and its reverse (90104523121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12132540109 - 2¹⁵ = 12132507341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12132540149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6066270054 + 6066270055.

It is an arithmetic number, because the mean of its divisors is an integer number (6066270055).

Almost surely, 2^12132540109 is an apocalyptic number.

It is an amenable number.

12132540109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12132540109 is an equidigital number, since it uses as much as digits as its factorization.

12132540109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 12132540109 in words is "twelve billion, one hundred thirty-two million, five hundred forty thousand, one hundred nine".