391322211211297 has 2 divisors, whose sum is σ = 391322211211298. Its totient is φ = 391322211211296.

The previous prime is 391322211211229. The next prime is 391322211211417. The reversal of 391322211211297 is 792112112223193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348704868196881 + 42617343014416 = 18673641^2 + 6528196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-391322211211297 is a prime.

It is not a weakly prime, because it can be changed into another prime (391322211211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195661105605648 + 195661105605649.

It is an arithmetic number, because the mean of its divisors is an integer number (195661105605649).

Almost surely, 2^{391322211211297} is an apocalyptic number.

It is an amenable number.

391322211211297 is a deficient number, since it is larger than the sum of its proper divisors (1).

391322211211297 is an equidigital number, since it uses as much as digits as its factorization.

391322211211297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The spelling of 391322211211297 in words is "three hundred ninety-one trillion, three hundred twenty-two billion, two hundred eleven million, two hundred eleven thousand, two hundred ninety-seven".