331221022202212 has 6 divisors (see below), whose sum is σ = 579636788853878. Its totient is φ = 165610511101104.

The previous prime is 331221022202171. The next prime is 331221022202237. The reversal of 331221022202212 is 212202220122133.

It can be written as a sum of positive squares in only one way, i.e., 319221684634176 + 11999337568036 = 17866776^2 + 3464006^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41402627775273 + ... + 41402627775280.

Almost surely, 2^{331221022202212} is an apocalyptic number.

It is an amenable number.

331221022202212 is a deficient number, since it is larger than the sum of its proper divisors (248415766651666).

331221022202212 is a wasteful number, since it uses less digits than its factorization.

331221022202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82805255550557 (or 82805255550555 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 331221022202212 its reverse (212202220122133), we get a palindrome (543423242324345).

The spelling of 331221022202212 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, twenty-two million, two hundred two thousand, two hundred twelve".