321420244213603 has 2 divisors, whose sum is σ = 321420244213604. Its totient is φ = 321420244213602.

The previous prime is 321420244213429. The next prime is 321420244213619. The reversal of 321420244213603 is 306312442024123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321420244213603 - 2²⁹ = 321419707342691 is a prime.

It is not a weakly prime, because it can be changed into another prime (321420244213693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710122106801 + 160710122106802.

It is an arithmetic number, because the mean of its divisors is an integer number (160710122106802).

Almost surely, 2^{321420244213603} is an apocalyptic number.

321420244213603 is a deficient number, since it is larger than the sum of its proper divisors (1).

321420244213603 is an equidigital number, since it uses as much as digits as its factorization.

321420244213603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 321420244213603 its reverse (306312442024123), we get a palindrome (627732686237726).

The spelling of 321420244213603 in words is "three hundred twenty-one trillion, four hundred twenty billion, two hundred forty-four million, two hundred thirteen thousand, six hundred three".