12111222647 has 2 divisors, whose sum is σ = 12111222648. Its totient is φ = 12111222646.

The previous prime is 12111222533. The next prime is 12111222659. The reversal of 12111222647 is 74622211121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111222647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111222047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055611323 + 6055611324.

It is an arithmetic number, because the mean of its divisors is an integer number (6055611324).

Almost surely, 2^12111222647 is an apocalyptic number.

12111222647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111222647 is an equidigital number, since it uses as much as digits as its factorization.

12111222647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

Adding to 12111222647 its reverse (74622211121), we get a palindrome (86733433768).

The spelling of 12111222647 in words is "twelve billion, one hundred eleven million, two hundred twenty-two thousand, six hundred forty-seven".