1222551349 has 2 divisors, whose sum is σ = 1222551350. Its totient is φ = 1222551348.

The previous prime is 1222551329. The next prime is 1222551353. The reversal of 1222551349 is 9431552221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900600100 + 321951249 = 30010^2 + 17943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222551349 - 2¹⁵ = 1222518581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222551329) 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, 611275674 + 611275675.

It is an arithmetic number, because the mean of its divisors is an integer number (611275675).

Almost surely, 2^1222551349 is an apocalyptic number.

It is an amenable number.

1222551349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222551349 is an equidigital number, since it uses as much as digits as its factorization.

1222551349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 34.

The square root of 1222551349 is about 34965.0017732017. The cubic root of 1222551349 is about 1069.2740727888.

The spelling of 1222551349 in words is "one billion, two hundred twenty-two million, five hundred fifty-one thousand, three hundred forty-nine".