12061117612009 has 2 divisors, whose sum is σ = 12061117612010. Its totient is φ = 12061117612008.

The previous prime is 12061117612007. The next prime is 12061117612069. The reversal of 12061117612009 is 90021671116021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9716605419609 + 2344512192400 = 3117147^2 + 1531180^2 .

It is a cyclic number.

It is not a de Polignac number, because 12061117612009 - 2¹ = 12061117612007 is a prime.

It is a super-2 number, since 2×12061117612009² (a number of 27 digits) contains 22 as substring.

Together with 12061117612007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12061117612007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6030558806004 + 6030558806005.

It is an arithmetic number, because the mean of its divisors is an integer number (6030558806005).

Almost surely, 2^{12061117612009} is an apocalyptic number.

It is an amenable number.

12061117612009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12061117612009 is an equidigital number, since it uses as much as digits as its factorization.

12061117612009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 12061117612009 in words is "twelve trillion, sixty-one billion, one hundred seventeen million, six hundred twelve thousand, nine".