32140221 has 16 divisors (see below), whose sum is σ = 44463936. Its totient is φ = 20635776.

The previous prime is 32140219. The next prime is 32140231. The reversal of 32140221 is 12204123.

It is not a de Polignac number, because 32140221 - 2¹ = 32140219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32140221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32140231) 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 15 ways as a sum of consecutive naturals, for example, 7711 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (2778996).

Almost surely, 2^32140221 is an apocalyptic number.

It is an amenable number.

32140221 is a deficient number, since it is larger than the sum of its proper divisors (12323715).

32140221 is a wasteful number, since it uses less digits than its factorization.

32140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 32140221 is about 5669.2346044241. The cubic root of 32140221 is about 317.9432575471.

Adding to 32140221 its reverse (12204123), we get a palindrome (44344344).

The spelling of 32140221 in words is "thirty-two million, one hundred forty thousand, two hundred twenty-one".