1222445141 has 2 divisors, whose sum is σ = 1222445142. Its totient is φ = 1222445140.

The previous prime is 1222445111. The next prime is 1222445153. The reversal of 1222445141 is 1415442221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 641153041 + 581292100 = 25321^2 + 24110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222445141 - 2¹⁰ = 1222444117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222445141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222445111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611222570 + 611222571.

It is an arithmetic number, because the mean of its divisors is an integer number (611222571).

Almost surely, 2^1222445141 is an apocalyptic number.

It is an amenable number.

1222445141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222445141 is an equidigital number, since it uses as much as digits as its factorization.

1222445141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 26.

The square root of 1222445141 is about 34963.4829643730. The cubic root of 1222445141 is about 1069.2431078319.

Adding to 1222445141 its reverse (1415442221), we get a palindrome (2637887362).

The spelling of 1222445141 in words is "one billion, two hundred twenty-two million, four hundred forty-five thousand, one hundred forty-one".