12011023232009 has 2 divisors, whose sum is σ = 12011023232010. Its totient is φ = 12011023232008.

The previous prime is 12011023232003. The next prime is 12011023232029. The reversal of 12011023232009 is 90023232011021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9087360975625 + 2923662256384 = 3014525^2 + 1709872^2 .

It is an emirp because it is prime and its reverse (90023232011021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011023232009 - 2²⁴ = 12011006454793 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011023232003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005511616004 + 6005511616005.

It is an arithmetic number, because the mean of its divisors is an integer number (6005511616005).

Almost surely, 2^{12011023232009} is an apocalyptic number.

It is an amenable number.

12011023232009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011023232009 is an equidigital number, since it uses as much as digits as its factorization.

12011023232009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 12011023232009 in words is "twelve trillion, eleven billion, twenty-three million, two hundred thirty-two thousand, nine".