12221423057 has 2 divisors, whose sum is σ = 12221423058. Its totient is φ = 12221423056.

The previous prime is 12221423041. The next prime is 12221423111. The reversal of 12221423057 is 75032412221.

12221423057 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., 6242422081 + 5979000976 = 79009^2 + 77324^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221423057 - 2⁴ = 12221423041 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221423657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110711528 + 6110711529.

It is an arithmetic number, because the mean of its divisors is an integer number (6110711529).

Almost surely, 2^12221423057 is an apocalyptic number.

It is an amenable number.

12221423057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221423057 is an equidigital number, since it uses as much as digits as its factorization.

12221423057 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12221423057 its reverse (75032412221), we get a palindrome (87253835278).

The spelling of 12221423057 in words is "twelve billion, two hundred twenty-one million, four hundred twenty-three thousand, fifty-seven".