331132023330221 has 2 divisors, whose sum is σ = 331132023330222. Its totient is φ = 331132023330220.

The previous prime is 331132023330209. The next prime is 331132023330239. The reversal of 331132023330221 is 122033320231133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286670612822500 + 44461410507721 = 16931350^2 + 6667939^2 .

It is a cyclic number.

It is not a de Polignac number, because 331132023330221 - 2²² = 331132019135917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331132023930221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165566011665110 + 165566011665111.

It is an arithmetic number, because the mean of its divisors is an integer number (165566011665111).

Almost surely, 2^{331132023330221} is an apocalyptic number.

It is an amenable number.

331132023330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

331132023330221 is an equidigital number, since it uses as much as digits as its factorization.

331132023330221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 331132023330221 its reverse (122033320231133), we get a palindrome (453165343561354).

The spelling of 331132023330221 in words is "three hundred thirty-one trillion, one hundred thirty-two billion, twenty-three million, three hundred thirty thousand, two hundred twenty-one".