330231143240221 has 2 divisors, whose sum is σ = 330231143240222. Its totient is φ = 330231143240220.

The previous prime is 330231143240209. The next prime is 330231143240227. The reversal of 330231143240221 is 122042341132033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325736259867225 + 4494883372996 = 18048165^2 + 2120114^2 .

It is a cyclic number.

It is not a de Polignac number, because 330231143240221 - 2¹⁹ = 330231142715933 is a prime.

It is a super-3 number, since 3×330231143240221³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330231143240227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165115571620110 + 165115571620111.

It is an arithmetic number, because the mean of its divisors is an integer number (165115571620111).

Almost surely, 2^{330231143240221} is an apocalyptic number.

It is an amenable number.

330231143240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

330231143240221 is an equidigital number, since it uses as much as digits as its factorization.

330231143240221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 330231143240221 its reverse (122042341132033), we get a palindrome (452273484372254).

The spelling of 330231143240221 in words is "three hundred thirty trillion, two hundred thirty-one billion, one hundred forty-three million, two hundred forty thousand, two hundred twenty-one".