1220003143 has 2 divisors, whose sum is σ = 1220003144. Its totient is φ = 1220003142.

The previous prime is 1220003119. The next prime is 1220003177. The reversal of 1220003143 is 3413000221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3413000221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220003143 - 2⁹ = 1220002631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220001143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610001571 + 610001572.

It is an arithmetic number, because the mean of its divisors is an integer number (610001572).

Almost surely, 2^1220003143 is an apocalyptic number.

1220003143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220003143 is an equidigital number, since it uses as much as digits as its factorization.

1220003143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220003143 is about 34928.5433850311. The cubic root of 1220003143 is about 1068.5306477407.

Adding to 1220003143 its reverse (3413000221), we get a palindrome (4633003364).

The spelling of 1220003143 in words is "one billion, two hundred twenty million, three thousand, one hundred forty-three".