32243221 has 4 divisors (see below), whose sum is σ = 32429772. Its totient is φ = 32056672.

The previous prime is 32243219. The next prime is 32243231. The reversal of 32243221 is 12234223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12234223 = 71 ⋅172313.

It can be written as a sum of positive squares in 2 ways, for example, as 27447121 + 4796100 = 5239^2 + 2190^2 .

It is a cyclic number.

It is not a de Polignac number, because 32243221 - 2¹ = 32243219 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 (32243231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93016 + ... + 93361.

It is an arithmetic number, because the mean of its divisors is an integer number (8107443).

Almost surely, 2^32243221 is an apocalyptic number.

It is an amenable number.

32243221 is a deficient number, since it is larger than the sum of its proper divisors (186551).

32243221 is a wasteful number, since it uses less digits than its factorization.

32243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186550.

The product of its digits is 576, while the sum is 19.

The square root of 32243221 is about 5678.3114567625. The cubic root of 32243221 is about 318.2825337345.

Adding to 32243221 its reverse (12234223), we get a palindrome (44477444).

It can be divided in two parts, 32 and 243221, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 32243221 in words is "thirty-two million, two hundred forty-three thousand, two hundred twenty-one".