331221230222228 has 12 divisors (see below), whose sum is σ = 580119781667412. Its totient is φ = 165472721174400.

The previous prime is 331221230222227. The next prime is 331221230222249. The reversal of 331221230222228 is 822222032122133.

It can be written as a sum of positive squares in 2 ways, for example, as 23395679000464 + 307825551221764 = 4836908^2 + 17544958^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331221230222227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34473478775 + ... + 34473488382.

It is an arithmetic number, because the mean of its divisors is an integer number (48343315138951).

Almost surely, 2^{331221230222228} is an apocalyptic number.

It is an amenable number.

331221230222228 is a deficient number, since it is larger than the sum of its proper divisors (248898551445184).

331221230222228 is a wasteful number, since it uses less digits than its factorization.

331221230222228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68946968362 (or 68946968360 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 331221230222228 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, two hundred thirty million, two hundred twenty-two thousand, two hundred twenty-eight".