5221331243 has 2 divisors, whose sum is σ = 5221331244. Its totient is φ = 5221331242.

The previous prime is 5221331221. The next prime is 5221331281. The reversal of 5221331243 is 3421331225.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5221331243 - 2⁶ = 5221331179 is a prime.

It is not a weakly prime, because it can be changed into another prime (5221331443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610665621 + 2610665622.

It is an arithmetic number, because the mean of its divisors is an integer number (2610665622).

Almost surely, 2^5221331243 is an apocalyptic number.

5221331243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221331243 is an equidigital number, since it uses as much as digits as its factorization.

5221331243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 5221331243 is about 72258.7796949270. The cubic root of 5221331243 is about 1734.8439475731.

Adding to 5221331243 its reverse (3421331225), we get a palindrome (8642662468).

The spelling of 5221331243 in words is "five billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred forty-three".