12111202601 has 2 divisors, whose sum is σ = 12111202602. Its totient is φ = 12111202600.

The previous prime is 12111202591. The next prime is 12111202603. The reversal of 12111202601 is 10620211121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11932285225 + 178917376 = 109235^2 + 13376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111202601 is a prime.

It is a super-3 number, since 3×12111202601³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 12111202603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111202601.

It is not a weakly prime, because it can be changed into another prime (12111202603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055601300 + 6055601301.

It is an arithmetic number, because the mean of its divisors is an integer number (6055601301).

Almost surely, 2^12111202601 is an apocalyptic number.

It is an amenable number.

12111202601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111202601 is an equidigital number, since it uses as much as digits as its factorization.

12111202601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12111202601 its reverse (10620211121), we get a palindrome (22731413722).

The spelling of 12111202601 in words is "twelve billion, one hundred eleven million, two hundred two thousand, six hundred one".