12209061517 has 2 divisors, whose sum is σ = 12209061518. Its totient is φ = 12209061516.

The previous prime is 12209061499. The next prime is 12209061577. The reversal of 12209061517 is 71516090221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12160355076 + 48706441 = 110274^2 + 6979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12209061517 is a prime.

It is a super-2 number, since 2×12209061517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12209061577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104530758 + 6104530759.

It is an arithmetic number, because the mean of its divisors is an integer number (6104530759).

Almost surely, 2^12209061517 is an apocalyptic number.

It is an amenable number.

12209061517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209061517 is an equidigital number, since it uses as much as digits as its factorization.

12209061517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 12209061517 in words is "twelve billion, two hundred nine million, sixty-one thousand, five hundred seventeen".