331143121030221 has 12 divisors (see below), whose sum is σ = 479355407310780. Its totient is φ = 220283204153280.

The previous prime is 331143121030219. The next prime is 331143121030237. The reversal of 331143121030221 is 122030121341133.

331143121030221 is a `hidden beast` number, since 3 + 3 + 1 + 1 + 431 + 2 + 1 + 0 + 3 + 0 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 182042537074596 + 149100583955625 = 13492314^2 + 12210675^2 .

It is not a de Polignac number, because 331143121030221 - 2¹ = 331143121030219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331143121030261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39906373416 + ... + 39906381713.

It is an arithmetic number, because the mean of its divisors is an integer number (39946283942565).

Almost surely, 2^{331143121030221} is an apocalyptic number.

It is an amenable number.

331143121030221 is a deficient number, since it is larger than the sum of its proper divisors (148212286280559).

331143121030221 is a wasteful number, since it uses less digits than its factorization.

331143121030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79812755596 (or 79812755593 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 331143121030221 its reverse (122030121341133), we get a palindrome (453173242371354).

The spelling of 331143121030221 in words is "three hundred thirty-one trillion, one hundred forty-three billion, one hundred twenty-one million, thirty thousand, two hundred twenty-one".