12221220001057 has 2 divisors, whose sum is σ = 12221220001058. Its totient is φ = 12221220001056.

The previous prime is 12221220000991. The next prime is 12221220001201. The reversal of 12221220001057 is 75010002212221.

It is a happy number.

12221220001057 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., 10953346253056 + 1267873748001 = 3309584^2 + 1125999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221220001057 is a prime.

It is a super-2 number, since 2×12221220001057² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12221220001457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110610000528 + 6110610000529.

It is an arithmetic number, because the mean of its divisors is an integer number (6110610000529).

Almost surely, 2^{12221220001057} is an apocalyptic number.

It is an amenable number.

12221220001057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221220001057 is an equidigital number, since it uses as much as digits as its factorization.

12221220001057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 12221220001057 its reverse (75010002212221), we get a palindrome (87231222213278).

The spelling of 12221220001057 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one thousand, fifty-seven".