321230012197 has 2 divisors, whose sum is σ = 321230012198. Its totient is φ = 321230012196.

The previous prime is 321230012093. The next prime is 321230012221. The reversal of 321230012197 is 791210032123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184857862401 + 136372149796 = 429951^2 + 369286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321230012197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321230013197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615006098 + 160615006099.

It is an arithmetic number, because the mean of its divisors is an integer number (160615006099).

Almost surely, 2^321230012197 is an apocalyptic number.

It is an amenable number.

321230012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

321230012197 is an equidigital number, since it uses as much as digits as its factorization.

321230012197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 321230012197 in words is "three hundred twenty-one billion, two hundred thirty million, twelve thousand, one hundred ninety-seven".