3212130222221 has 2 divisors, whose sum is σ = 3212130222222. Its totient is φ = 3212130222220.

The previous prime is 3212130222187. The next prime is 3212130222229. The reversal of 3212130222221 is 1222220312123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3013744608196 + 198385614025 = 1736014^2 + 445405^2 .

It is an emirp because it is prime and its reverse (1222220312123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3212130222221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212130222229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606065111110 + 1606065111111.

It is an arithmetic number, because the mean of its divisors is an integer number (1606065111111).

Almost surely, 2^{3212130222221} is an apocalyptic number.

It is an amenable number.

3212130222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212130222221 is an equidigital number, since it uses as much as digits as its factorization.

3212130222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 3212130222221 its reverse (1222220312123), we get a palindrome (4434350534344).

The spelling of 3212130222221 in words is "three trillion, two hundred twelve billion, one hundred thirty million, two hundred twenty-two thousand, two hundred twenty-one".