321003212132321 has 2 divisors, whose sum is σ = 321003212132322. Its totient is φ = 321003212132320.

The previous prime is 321003212132299. The next prime is 321003212132353. The reversal of 321003212132321 is 123231212300123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299219420161600 + 21783791970721 = 17297960^2 + 4667311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321003212132321 is a prime.

It is a super-2 number, since 2×321003212132321² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321003212132021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160501606066160 + 160501606066161.

It is an arithmetic number, because the mean of its divisors is an integer number (160501606066161).

Almost surely, 2^{321003212132321} is an apocalyptic number.

It is an amenable number.

321003212132321 is a deficient number, since it is larger than the sum of its proper divisors (1).

321003212132321 is an equidigital number, since it uses as much as digits as its factorization.

321003212132321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 321003212132321 its reverse (123231212300123), we get a palindrome (444234424432444).

The spelling of 321003212132321 in words is "three hundred twenty-one trillion, three billion, two hundred twelve million, one hundred thirty-two thousand, three hundred twenty-one".