5221302221 has 2 divisors, whose sum is σ = 5221302222. Its totient is φ = 5221302220.

The previous prime is 5221302211. The next prime is 5221302241. The reversal of 5221302221 is 1222031225.

It is an a-pointer prime, because the next prime (5221302241) can be obtained adding 5221302221 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4759482121 + 461820100 = 68989^2 + 21490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5221302221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5221302193 and 5221302202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610651110 + 2610651111.

It is an arithmetic number, because the mean of its divisors is an integer number (2610651111).

Almost surely, 2^5221302221 is an apocalyptic number.

It is an amenable number.

5221302221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221302221 is an equidigital number, since it uses as much as digits as its factorization.

5221302221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 5221302221 is about 72258.5788747606. The cubic root of 5221302221 is about 1734.8407332757.

Adding to 5221302221 its reverse (1222031225), we get a palindrome (6443333446).

The spelling of 5221302221 in words is "five billion, two hundred twenty-one million, three hundred two thousand, two hundred twenty-one".