143243453221 has 8 divisors (see below), whose sum is σ = 163059741504. Its totient is φ = 124559524320.

The previous prime is 143243453203. The next prime is 143243453239. The reversal of 143243453221 is 122354342341.

143243453221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (143243453203) and next prime (143243453239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143243453221 - 2¹⁷ = 143243322149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143243453321) 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 in 7 ways as a sum of consecutive naturals, for example, 283089576 + ... + 283090081.

It is an arithmetic number, because the mean of its divisors is an integer number (20382467688).

Almost surely, 2^143243453221 is an apocalyptic number.

143243453221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143243453221 is a deficient number, since it is larger than the sum of its proper divisors (19816288283).

143243453221 is a wasteful number, since it uses less digits than its factorization.

143243453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566179691.

The product of its digits is 69120, while the sum is 34.

Adding to 143243453221 its reverse (122354342341), we get a palindrome (265597795562).

The spelling of 143243453221 in words is "one hundred forty-three billion, two hundred forty-three million, four hundred fifty-three thousand, two hundred twenty-one".