4350224531221 has 4 divisors (see below), whose sum is σ = 4351004007244. Its totient is φ = 4349445055200.

The previous prime is 4350224531183. The next prime is 4350224531381. The reversal of 4350224531221 is 1221354220534.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3274793310321 + 1075431220900 = 1809639^2 + 1037030^2 .

It is a cyclic number.

It is not a de Polignac number, because 4350224531221 - 2¹¹ = 4350224529173 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 (4350224532221) 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, 389729640 + ... + 389740801.

It is an arithmetic number, because the mean of its divisors is an integer number (1087751001811).

Almost surely, 2^{4350224531221} is an apocalyptic number.

It is an amenable number.

4350224531221 is a deficient number, since it is larger than the sum of its proper divisors (779476023).

4350224531221 is an equidigital number, since it uses as much as digits as its factorization.

4350224531221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779476022.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 4350224531221 its reverse (1221354220534), we get a palindrome (5571578751755).

The spelling of 4350224531221 in words is "four trillion, three hundred fifty billion, two hundred twenty-four million, five hundred thirty-one thousand, two hundred twenty-one".