1222344457 has 2 divisors, whose sum is σ = 1222344458. Its totient is φ = 1222344456.

The previous prime is 1222344427. The next prime is 1222344467. The reversal of 1222344457 is 7544432221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705646096 + 516698361 = 26564^2 + 22731^2 .

It is an emirp because it is prime and its reverse (7544432221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222344457 - 2¹⁵ = 1222311689 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1222344427) 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, 611172228 + 611172229.

It is an arithmetic number, because the mean of its divisors is an integer number (611172229).

Almost surely, 2^1222344457 is an apocalyptic number.

It is an amenable number.

1222344457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222344457 is an equidigital number, since it uses as much as digits as its factorization.

1222344457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 34.

The square root of 1222344457 is about 34962.0430896136. The cubic root of 1222344457 is about 1069.2137517419.

Adding to 1222344457 its reverse (7544432221), we get a palindrome (8766776678).

The spelling of 1222344457 in words is "one billion, two hundred twenty-two million, three hundred forty-four thousand, four hundred fifty-seven".