3212102221 has 2 divisors, whose sum is σ = 3212102222. Its totient is φ = 3212102220.

The previous prime is 3212102219. The next prime is 3212102251. The reversal of 3212102221 is 1222012123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3088024900 + 124077321 = 55570^2 + 11139^2 .

It is an emirp because it is prime and its reverse (1222012123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3212102221 - 2¹ = 3212102219 is a prime.

Together with 3212102219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3212102195 and 3212102204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212102251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606051110 + 1606051111.

It is an arithmetic number, because the mean of its divisors is an integer number (1606051111).

Almost surely, 2^3212102221 is an apocalyptic number.

It is an amenable number.

3212102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212102221 is an equidigital number, since it uses as much as digits as its factorization.

3212102221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3212102221 is about 56675.4110792326. The cubic root of 3212102221 is about 1475.4679692569.

Adding to 3212102221 its reverse (1222012123), we get a palindrome (4434114344).

The spelling of 3212102221 in words is "three billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".