9522221 has 4 divisors (see below), whose sum is σ = 9743712. Its totient is φ = 9300732.

The previous prime is 9522217. The next prime is 9522269. The reversal of 9522221 is 1222259.

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 9522221 - 2² = 9522217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9522281) 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, 110681 + ... + 110766.

It is an arithmetic number, because the mean of its divisors is an integer number (2435928).

Almost surely, 2^9522221 is an apocalyptic number.

It is an amenable number.

9522221 is a deficient number, since it is larger than the sum of its proper divisors (221491).

9522221 is a wasteful number, since it uses less digits than its factorization.

9522221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221490.

The product of its digits is 720, while the sum is 23.

The square root of 9522221 is about 3085.8096182364. The cubic root of 9522221 is about 211.9561808687.

The spelling of 9522221 in words is "nine million, five hundred twenty-two thousand, two hundred twenty-one".