32503120221 has 48 divisors (see below), whose sum is σ = 52730758080. Its totient is φ = 17556349440.

The previous prime is 32503120217. The next prime is 32503120229. The reversal of 32503120221 is 12202130523.

It is not a de Polignac number, because 32503120221 - 2² = 32503120217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32503120229) 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 47 ways as a sum of consecutive naturals, for example, 315745 + ... + 405833.

It is an arithmetic number, because the mean of its divisors is an integer number (1098557460).

Almost surely, 2^32503120221 is an apocalyptic number.

It is an amenable number.

32503120221 is a deficient number, since it is larger than the sum of its proper divisors (20227637859).

32503120221 is a wasteful number, since it uses less digits than its factorization.

32503120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90174 (or 90145 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 32503120221 its reverse (12202130523), we get a palindrome (44705250744).

The spelling of 32503120221 in words is "thirty-two billion, five hundred three million, one hundred twenty thousand, two hundred twenty-one".