12111210638057 has 2 divisors, whose sum is σ = 12111210638058. Its totient is φ = 12111210638056.

The previous prime is 12111210638053. The next prime is 12111210638089. The reversal of 12111210638057 is 75083601211121.

12111210638057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10877753844736 + 1233456793321 = 3298144^2 + 1110611^2 .

It is an emirp because it is prime and its reverse (75083601211121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12111210638057 - 2² = 12111210638053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111210638057.

It is not a weakly prime, because it can be changed into another prime (12111210638053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055605319028 + 6055605319029.

It is an arithmetic number, because the mean of its divisors is an integer number (6055605319029).

Almost surely, 2^{12111210638057} is an apocalyptic number.

It is an amenable number.

12111210638057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111210638057 is an equidigital number, since it uses as much as digits as its factorization.

12111210638057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

Adding to 12111210638057 its reverse (75083601211121), we get a palindrome (87194811849178).

The spelling of 12111210638057 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, six hundred thirty-eight thousand, fifty-seven".