12111120017 has 2 divisors, whose sum is σ = 12111120018. Its totient is φ = 12111120016.

The previous prime is 12111120013. The next prime is 12111120101. The reversal of 12111120017 is 71002111121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11164880896 + 946239121 = 105664^2 + 30761^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111120017 - 2² = 12111120013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12111119977 and 12111120004.

It is not a weakly prime, because it can be changed into another prime (12111120013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055560008 + 6055560009.

It is an arithmetic number, because the mean of its divisors is an integer number (6055560009).

Almost surely, 2^12111120017 is an apocalyptic number.

It is an amenable number.

12111120017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111120017 is an equidigital number, since it uses as much as digits as its factorization.

12111120017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 12111120017 its reverse (71002111121), we get a palindrome (83113231138).

The spelling of 12111120017 in words is "twelve billion, one hundred eleven million, one hundred twenty thousand, seventeen".