1222242422257 has 2 divisors, whose sum is σ = 1222242422258. Its totient is φ = 1222242422256.

The previous prime is 1222242422249. The next prime is 1222242422299. The reversal of 1222242422257 is 7522242422221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809308947456 + 412933474801 = 899616^2 + 642599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222242422257 - 2³ = 1222242422249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222242422057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611121211128 + 611121211129.

It is an arithmetic number, because the mean of its divisors is an integer number (611121211129).

Almost surely, 2^{1222242422257} is an apocalyptic number.

It is an amenable number.

1222242422257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222242422257 is an equidigital number, since it uses as much as digits as its factorization.

1222242422257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 143360, while the sum is 37.

Adding to 1222242422257 its reverse (7522242422221), we get a palindrome (8744484844478).

The spelling of 1222242422257 in words is "one trillion, two hundred twenty-two billion, two hundred forty-two million, four hundred twenty-two thousand, two hundred fifty-seven".