321121021301 has 2 divisors, whose sum is σ = 321121021302. Its totient is φ = 321121021300.

The previous prime is 321121021157. The next prime is 321121021303. The reversal of 321121021301 is 103120121123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167927844100 + 153193177201 = 409790^2 + 391399^2 .

It is a cyclic number.

It is not a de Polignac number, because 321121021301 - 2²² = 321116826997 is a prime.

Together with 321121021303, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321121021301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321121021303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560510650 + 160560510651.

It is an arithmetic number, because the mean of its divisors is an integer number (160560510651).

Almost surely, 2^321121021301 is an apocalyptic number.

It is an amenable number.

321121021301 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121021301 is an equidigital number, since it uses as much as digits as its factorization.

321121021301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321121021301 its reverse (103120121123), we get a palindrome (424241142424).

The spelling of 321121021301 in words is "three hundred twenty-one billion, one hundred twenty-one million, twenty-one thousand, three hundred one".