5222352221 has 4 divisors (see below), whose sum is σ = 5222854272. Its totient is φ = 5221850172.

The previous prime is 5222352209. The next prime is 5222352229. The reversal of 5222352221 is 1222532225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5222352221 - 2³⁰ = 4148610397 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 (5222352229) 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, 235085 + ... + 256338.

It is an arithmetic number, because the mean of its divisors is an integer number (1305713568).

Almost surely, 2^5222352221 is an apocalyptic number.

It is an amenable number.

5222352221 is a deficient number, since it is larger than the sum of its proper divisors (502051).

5222352221 is a wasteful number, since it uses less digits than its factorization.

5222352221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502050.

The product of its digits is 4800, while the sum is 26.

The square root of 5222352221 is about 72265.8440828030. The cubic root of 5222352221 is about 1734.9570172090.

Adding to 5222352221 its reverse (1222532225), we get a palindrome (6444884446).

The spelling of 5222352221 in words is "five billion, two hundred twenty-two million, three hundred fifty-two thousand, two hundred twenty-one".