1220324143 has 2 divisors, whose sum is σ = 1220324144. Its totient is φ = 1220324142.

The previous prime is 1220324129. The next prime is 1220324213. The reversal of 1220324143 is 3414230221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220324143 - 2²¹ = 1218226991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220354143) 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, 610162071 + 610162072.

It is an arithmetic number, because the mean of its divisors is an integer number (610162072).

Almost surely, 2^1220324143 is an apocalyptic number.

1220324143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220324143 is an equidigital number, since it uses as much as digits as its factorization.

1220324143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1220324143 is about 34933.1381785261. The cubic root of 1220324143 is about 1068.6243546741.

Adding to 1220324143 its reverse (3414230221), we get a palindrome (4634554364).

The spelling of 1220324143 in words is "one billion, two hundred twenty million, three hundred twenty-four thousand, one hundred forty-three".