9930221 has 8 divisors (see below), whose sum is σ = 11493120. Its totient is φ = 8403408.

The previous prime is 9930197. The next prime is 9930233. The reversal of 9930221 is 1220399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9930221 - 2¹⁴ = 9913837 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 (9933221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8426 + ... + 9531.

It is an arithmetic number, because the mean of its divisors is an integer number (1436640).

Almost surely, 2^9930221 is an apocalyptic number.

It is an amenable number.

9930221 is a deficient number, since it is larger than the sum of its proper divisors (1562899).

9930221 is a wasteful number, since it uses less digits than its factorization.

9930221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18043.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9930221 is about 3151.2253172377. The cubic root of 9930221 is about 214.9411845609.

The spelling of 9930221 in words is "nine million, nine hundred thirty thousand, two hundred twenty-one".