143103224221 has 4 divisors (see below), whose sum is σ = 143104014844. Its totient is φ = 143102433600.

The previous prime is 143103224213. The next prime is 143103224227. The reversal of 143103224221 is 122422301341.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122422301341 = 81401 ⋅1503941.

It can be written as a sum of positive squares in 2 ways, for example, as 26234280900 + 116868943321 = 161970^2 + 341861^2 .

It is a cyclic number.

It is not a de Polignac number, because 143103224221 - 2³ = 143103224213 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 (143103224227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25531 + ... + 535591.

It is an arithmetic number, because the mean of its divisors is an integer number (35776003711).

Almost surely, 2^143103224221 is an apocalyptic number.

It is an amenable number.

143103224221 is a deficient number, since it is larger than the sum of its proper divisors (790623).

143103224221 is an equidigital number, since it uses as much as digits as its factorization.

143103224221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790622.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 143103224221 its reverse (122422301341), we get a palindrome (265525525562).

The spelling of 143103224221 in words is "one hundred forty-three billion, one hundred three million, two hundred twenty-four thousand, two hundred twenty-one".