321055027121 has 2 divisors, whose sum is σ = 321055027122. Its totient is φ = 321055027120.

The previous prime is 321055027091. The next prime is 321055027193. The reversal of 321055027121 is 121720550123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318186246400 + 2868780721 = 564080^2 + 53561^2 .

It is an emirp because it is prime and its reverse (121720550123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321055027121 - 2¹⁸ = 321054764977 is a prime.

It is not a weakly prime, because it can be changed into another prime (321055027021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160527513560 + 160527513561.

It is an arithmetic number, because the mean of its divisors is an integer number (160527513561).

Almost surely, 2^321055027121 is an apocalyptic number.

It is an amenable number.

321055027121 is a deficient number, since it is larger than the sum of its proper divisors (1).

321055027121 is an equidigital number, since it uses as much as digits as its factorization.

321055027121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

Adding to 321055027121 its reverse (121720550123), we get a palindrome (442775577244).

The spelling of 321055027121 in words is "three hundred twenty-one billion, fifty-five million, twenty-seven thousand, one hundred twenty-one".