143334221 has 2 divisors, whose sum is σ = 143334222. Its totient is φ = 143334220.

The previous prime is 143334209. The next prime is 143334241. The reversal of 143334221 is 122433341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100902025 + 42432196 = 10045^2 + 6514^2 .

It is a cyclic number.

It is not a de Polignac number, because 143334221 - 2¹⁸ = 143072077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143334241) 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, 71667110 + 71667111.

It is an arithmetic number, because the mean of its divisors is an integer number (71667111).

Almost surely, 2^143334221 is an apocalyptic number.

It is an amenable number.

143334221 is a deficient number, since it is larger than the sum of its proper divisors (1).

143334221 is an equidigital number, since it uses as much as digits as its factorization.

143334221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 143334221 is about 11972.2270693468. The cubic root of 143334221 is about 523.3392369094.

Adding to 143334221 its reverse (122433341), we get a palindrome (265767562).

The spelling of 143334221 in words is "one hundred forty-three million, three hundred thirty-four thousand, two hundred twenty-one".