321122212097 has 2 divisors, whose sum is σ = 321122212098. Its totient is φ = 321122212096.

The previous prime is 321122212091. The next prime is 321122212193. The reversal of 321122212097 is 790212221123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161858163856 + 159264048241 = 402316^2 + 399079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321122212097 is a prime.

It is not a weakly prime, because it can be changed into another prime (321122212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160561106048 + 160561106049.

It is an arithmetic number, because the mean of its divisors is an integer number (160561106049).

Almost surely, 2^321122212097 is an apocalyptic number.

It is an amenable number.

321122212097 is a deficient number, since it is larger than the sum of its proper divisors (1).

321122212097 is an equidigital number, since it uses as much as digits as its factorization.

321122212097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 321122212097 in words is "three hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, ninety-seven".