331221230222273 has 2 divisors, whose sum is σ = 331221230222274. Its totient is φ = 331221230222272.

The previous prime is 331221230222249. The next prime is 331221230222279. The reversal of 331221230222273 is 372222032122133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326826811035904 + 4394419186369 = 18078352^2 + 2096287^2 .

It is an emirp because it is prime and its reverse (372222032122133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331221230222273 - 2¹⁰ = 331221230221249 is a prime.

It is not a weakly prime, because it can be changed into another prime (331221230222279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165610615111136 + 165610615111137.

It is an arithmetic number, because the mean of its divisors is an integer number (165610615111137).

Almost surely, 2^{331221230222273} is an apocalyptic number.

It is an amenable number.

331221230222273 is a deficient number, since it is larger than the sum of its proper divisors (1).

331221230222273 is an equidigital number, since it uses as much as digits as its factorization.

331221230222273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 35.

The spelling of 331221230222273 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, two hundred thirty million, two hundred twenty-two thousand, two hundred seventy-three".