331331303102221 has 16 divisors (see below), whose sum is σ = 349033877722240. Its totient is φ = 313655181396480.

The previous prime is 331331303102203. The next prime is 331331303102231. The reversal of 331331303102221 is 122201303133133.

It is a happy number.

It is not a de Polignac number, because 331331303102221 - 2¹¹ = 331331303100173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331331303102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331331303102231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270306901 + ... + 271529893.

It is an arithmetic number, because the mean of its divisors is an integer number (21814617357640).

Almost surely, 2^{331331303102221} is an apocalyptic number.

It is an amenable number.

331331303102221 is a deficient number, since it is larger than the sum of its proper divisors (17702574620019).

331331303102221 is a wasteful number, since it uses less digits than its factorization.

331331303102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233796.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 331331303102221 its reverse (122201303133133), we get a palindrome (453532606235354).

The spelling of 331331303102221 in words is "three hundred thirty-one trillion, three hundred thirty-one billion, three hundred three million, one hundred two thousand, two hundred twenty-one".