304122040221397 has 2 divisors, whose sum is σ = 304122040221398. Its totient is φ = 304122040221396.

The previous prime is 304122040221383. The next prime is 304122040221421. The reversal of 304122040221397 is 793122040221403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274338236059281 + 29783804162116 = 16563159^2 + 5457454^2 .

It is a cyclic number.

It is not a de Polignac number, because 304122040221397 - 2¹⁹ = 304122039697109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304122040261397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152061020110698 + 152061020110699.

It is an arithmetic number, because the mean of its divisors is an integer number (152061020110699).

Almost surely, 2^{304122040221397} is an apocalyptic number.

It is an amenable number.

304122040221397 is a deficient number, since it is larger than the sum of its proper divisors (1).

304122040221397 is an equidigital number, since it uses as much as digits as its factorization.

304122040221397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 304122040221397 in words is "three hundred four trillion, one hundred twenty-two billion, forty million, two hundred twenty-one thousand, three hundred ninety-seven".