143020402221 has 4 divisors (see below), whose sum is σ = 190693869632. Its totient is φ = 95346934812.

The previous prime is 143020402181. The next prime is 143020402279. The reversal of 143020402221 is 122204020341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 143020402221 - 2²¹ = 143018305069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143020402621) 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 in 3 ways as a sum of consecutive naturals, for example, 23836733701 + ... + 23836733706.

It is an arithmetic number, because the mean of its divisors is an integer number (47673467408).

Almost surely, 2^143020402221 is an apocalyptic number.

It is an amenable number.

143020402221 is a deficient number, since it is larger than the sum of its proper divisors (47673467411).

143020402221 is an equidigital number, since it uses as much as digits as its factorization.

143020402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47673467410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 143020402221 its reverse (122204020341), we get a palindrome (265224422562).

The spelling of 143020402221 in words is "one hundred forty-three billion, twenty million, four hundred two thousand, two hundred twenty-one".