321214144200421 has 2 divisors, whose sum is σ = 321214144200422. Its totient is φ = 321214144200420.

The previous prime is 321214144200361. The next prime is 321214144200449. The reversal of 321214144200421 is 124002441412123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244151906380321 + 77062237820100 = 15625361^2 + 8778510^2 .

It is an emirp because it is prime and its reverse (124002441412123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321214144200421 - 2¹³ = 321214144192229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321214144270421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160607072100210 + 160607072100211.

It is an arithmetic number, because the mean of its divisors is an integer number (160607072100211).

Almost surely, 2^{321214144200421} is an apocalyptic number.

It is an amenable number.

321214144200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

321214144200421 is an equidigital number, since it uses as much as digits as its factorization.

321214144200421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 321214144200421 its reverse (124002441412123), we get a palindrome (445216585612544).

The spelling of 321214144200421 in words is "three hundred twenty-one trillion, two hundred fourteen billion, one hundred forty-four million, two hundred thousand, four hundred twenty-one".