3212443142221 has 2 divisors, whose sum is σ = 3212443142222. Its totient is φ = 3212443142220.

The previous prime is 3212443142219. The next prime is 3212443142231. The reversal of 3212443142221 is 1222413442123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2172071702025 + 1040371440196 = 1473795^2 + 1019986^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212443142221 - 2¹ = 3212443142219 is a prime.

Together with 3212443142219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212443142231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606221571110 + 1606221571111.

It is an arithmetic number, because the mean of its divisors is an integer number (1606221571111).

Almost surely, 2^{3212443142221} is an apocalyptic number.

It is an amenable number.

3212443142221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212443142221 is an equidigital number, since it uses as much as digits as its factorization.

3212443142221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 31.

Adding to 3212443142221 its reverse (1222413442123), we get a palindrome (4434856584344).

The spelling of 3212443142221 in words is "three trillion, two hundred twelve billion, four hundred forty-three million, one hundred forty-two thousand, two hundred twenty-one".