321412044221 has 2 divisors, whose sum is σ = 321412044222. Its totient is φ = 321412044220.

The previous prime is 321412044211. The next prime is 321412044227. The reversal of 321412044221 is 122440214123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294512436100 + 26899608121 = 542690^2 + 164011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321412044221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321412044227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160706022110 + 160706022111.

It is an arithmetic number, because the mean of its divisors is an integer number (160706022111).

Almost surely, 2^321412044221 is an apocalyptic number.

It is an amenable number.

321412044221 is a deficient number, since it is larger than the sum of its proper divisors (1).

321412044221 is an equidigital number, since it uses as much as digits as its factorization.

321412044221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 321412044221 its reverse (122440214123), we get a palindrome (443852258344).

The spelling of 321412044221 in words is "three hundred twenty-one billion, four hundred twelve million, forty-four thousand, two hundred twenty-one".