330323131232221 has 2 divisors, whose sum is σ = 330323131232222. Its totient is φ = 330323131232220.

The previous prime is 330323131232119. The next prime is 330323131232243. The reversal of 330323131232221 is 122232131323033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274357979700025 + 55965151532196 = 16563755^2 + 7480986^2 .

It is an emirp because it is prime and its reverse (122232131323033) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330323131232221 is a prime.

It is a super-2 number, since 2×330323131232221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330323131232261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165161565616110 + 165161565616111.

It is an arithmetic number, because the mean of its divisors is an integer number (165161565616111).

Almost surely, 2^{330323131232221} is an apocalyptic number.

It is an amenable number.

330323131232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

330323131232221 is an equidigital number, since it uses as much as digits as its factorization.

330323131232221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 330323131232221 its reverse (122232131323033), we get a palindrome (452555262555254).

The spelling of 330323131232221 in words is "three hundred thirty trillion, three hundred twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-one".