1222454143 has 2 divisors, whose sum is σ = 1222454144. Its totient is φ = 1222454142.

The previous prime is 1222454089. The next prime is 1222454201. The reversal of 1222454143 is 3414542221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222454143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222454743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611227071 + 611227072.

It is an arithmetic number, because the mean of its divisors is an integer number (611227072).

Almost surely, 2^1222454143 is an apocalyptic number.

1222454143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222454143 is an equidigital number, since it uses as much as digits as its factorization.

1222454143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 1222454143 is about 34963.6116984501. The cubic root of 1222454143 is about 1069.2457324358.

Adding to 1222454143 its reverse (3414542221), we get a palindrome (4636996364).

The spelling of 1222454143 in words is "one billion, two hundred twenty-two million, four hundred fifty-four thousand, one hundred forty-three".