331221113131330 has 16 divisors (see below), whose sum is σ = 596208472172280. Its totient is φ = 132486118911232.

The previous prime is 331221113131291. The next prime is 331221113131367. The reversal of 331221113131330 is 33131311122133.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 145763099951121 + 185458013180209 = 12073239^2 + 13618297^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290194615 + ... + 291333754.

Almost surely, 2^{331221113131330} is an apocalyptic number.

331221113131330 is a deficient number, since it is larger than the sum of its proper divisors (264987359040950).

331221113131330 is a wasteful number, since it uses less digits than its factorization.

331221113131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581585333.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 331221113131330 its reverse (33131311122133), we get a palindrome (364352424253463).

The spelling of 331221113131330 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, one hundred thirteen million, one hundred thirty-one thousand, three hundred thirty".