32212321 has 2 divisors, whose sum is σ = 32212322. Its totient is φ = 32212320.

The previous prime is 32212319. The next prime is 32212333. The reversal of 32212321 is 12321223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 12285025 = 4464^2 + 3505^2 .

It is an emirp because it is prime and its reverse (12321223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32212321 - 2¹ = 32212319 is a prime.

Together with 32212319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 32212295 and 32212304.

It is not a weakly prime, because it can be changed into another prime (32212361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16106160 + 16106161.

It is an arithmetic number, because the mean of its divisors is an integer number (16106161).

Almost surely, 2^32212321 is an apocalyptic number.

It is an amenable number.

32212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

32212321 is an equidigital number, since it uses as much as digits as its factorization.

32212321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 16.

The square root of 32212321 is about 5675.5899252853. The cubic root of 32212321 is about 318.1808268392.

Adding to 32212321 its reverse (12321223), we get a palindrome (44533544).

The spelling of 32212321 in words is "thirty-two million, two hundred twelve thousand, three hundred twenty-one".