12243221071 has 2 divisors, whose sum is σ = 12243221072. Its totient is φ = 12243221070.

The previous prime is 12243221059. The next prime is 12243221087. The reversal of 12243221071 is 17012234221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12243221071 - 2¹⁹ = 12242696783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12243221051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121610535 + 6121610536.

It is an arithmetic number, because the mean of its divisors is an integer number (6121610536).

Almost surely, 2^12243221071 is an apocalyptic number.

12243221071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12243221071 is an equidigital number, since it uses as much as digits as its factorization.

12243221071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 12243221071 its reverse (17012234221), we get a palindrome (29255455292).

The spelling of 12243221071 in words is "twelve billion, two hundred forty-three million, two hundred twenty-one thousand, seventy-one".