9932221 has 4 divisors (see below), whose sum is σ = 10696252. Its totient is φ = 9168192.

The previous prime is 9932213. The next prime is 9932227. The reversal of 9932221 is 1222399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222399 = 809 ⋅1511.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 9369721 = 750^2 + 3061^2 .

It is a cyclic number.

It is not a de Polignac number, because 9932221 - 2³ = 9932213 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9932221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9932227) 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, 381996 + ... + 382021.

It is an arithmetic number, because the mean of its divisors is an integer number (2674063).

Almost surely, 2^9932221 is an apocalyptic number.

It is an amenable number.

9932221 is a deficient number, since it is larger than the sum of its proper divisors (764031).

9932221 is a wasteful number, since it uses less digits than its factorization.

9932221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764030.

The product of its digits is 1944, while the sum is 28.

The square root of 9932221 is about 3151.5426381377. The cubic root of 9932221 is about 214.9556136964.

It can be divided in two parts, 9932 and 221, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 9932221 in words is "nine million, nine hundred thirty-two thousand, two hundred twenty-one".