5221324421 has 4 divisors (see below), whose sum is σ = 5221472844. Its totient is φ = 5221176000.

The previous prime is 5221324417. The next prime is 5221324429. The reversal of 5221324421 is 1244231225.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 2598450625 + 2622873796 = 50975^2 + 51214^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221324421 - 2² = 5221324417 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 (5221324429) 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, 11741 + ... + 102861.

It is an arithmetic number, because the mean of its divisors is an integer number (1305368211).

Almost surely, 2^5221324421 is an apocalyptic number.

It is an amenable number.

5221324421 is a deficient number, since it is larger than the sum of its proper divisors (148423).

5221324421 is an equidigital number, since it uses as much as digits as its factorization.

5221324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148422.

The product of its digits is 3840, while the sum is 26.

The square root of 5221324421 is about 72258.7324895753. The cubic root of 5221324421 is about 1734.8431920116.

Adding to 5221324421 its reverse (1244231225), we get a palindrome (6465555646).

The spelling of 5221324421 in words is "five billion, two hundred twenty-one million, three hundred twenty-four thousand, four hundred twenty-one".