1222343281 has 2 divisors, whose sum is σ = 1222343282. Its totient is φ = 1222343280.

The previous prime is 1222343251. The next prime is 1222343341. The reversal of 1222343281 is 1823432221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222131681 + 211600 = 34959^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222343281 - 2⁹ = 1222342769 is a prime.

It is a super-2 number, since 2×1222343281² = 2988246193211689922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222343251) 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, 611171640 + 611171641.

It is an arithmetic number, because the mean of its divisors is an integer number (611171641).

Almost surely, 2^1222343281 is an apocalyptic number.

It is an amenable number.

1222343281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222343281 is an equidigital number, since it uses as much as digits as its factorization.

1222343281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 1222343281 is about 34962.0262713705. The cubic root of 1222343281 is about 1069.2134088501.

The spelling of 1222343281 in words is "one billion, two hundred twenty-two million, three hundred forty-three thousand, two hundred eighty-one".