12212207543 has 2 divisors, whose sum is σ = 12212207544. Its totient is φ = 12212207542.

The previous prime is 12212207471. The next prime is 12212207563. The reversal of 12212207543 is 34570221221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212207543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212207563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106103771 + 6106103772.

It is an arithmetic number, because the mean of its divisors is an integer number (6106103772).

Almost surely, 2^12212207543 is an apocalyptic number.

12212207543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212207543 is an equidigital number, since it uses as much as digits as its factorization.

12212207543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 12212207543 its reverse (34570221221), we get a palindrome (46782428764).

The spelling of 12212207543 in words is "twelve billion, two hundred twelve million, two hundred seven thousand, five hundred forty-three".