4223143121 has 2 divisors, whose sum is σ = 4223143122. Its totient is φ = 4223143120.

The previous prime is 4223143109. The next prime is 4223143163. The reversal of 4223143121 is 1213413224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2804867521 + 1418275600 = 52961^2 + 37660^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223143121 - 2¹⁴ = 4223126737 is a prime.

It is not a weakly prime, because it can be changed into another prime (4223143181) 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, 2111571560 + 2111571561.

It is an arithmetic number, because the mean of its divisors is an integer number (2111571561).

Almost surely, 2^4223143121 is an apocalyptic number.

It is an amenable number.

4223143121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223143121 is an equidigital number, since it uses as much as digits as its factorization.

4223143121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 4223143121 is about 64985.7147456270. The cubic root of 4223143121 is about 1616.3866936058.

Adding to 4223143121 its reverse (1213413224), we get a palindrome (5436556345).

The spelling of 4223143121 in words is "four billion, two hundred twenty-three million, one hundred forty-three thousand, one hundred twenty-one".