331303211221 has 8 divisors (see below), whose sum is σ = 332245887680. Its totient is φ = 330361353792.

The previous prime is 331303211201. The next prime is 331303211237. The reversal of 331303211221 is 122112303133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331303211221 - 2⁷ = 331303211093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331303211192 and 331303211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331303211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610006 + ... + 1017208.

It is an arithmetic number, because the mean of its divisors is an integer number (41530735960).

Almost surely, 2^331303211221 is an apocalyptic number.

It is an amenable number.

331303211221 is a deficient number, since it is larger than the sum of its proper divisors (942676459).

331303211221 is a wasteful number, since it uses less digits than its factorization.

331303211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409515.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 331303211221 its reverse (122112303133), we get a palindrome (453415514354).

The spelling of 331303211221 in words is "three hundred thirty-one billion, three hundred three million, two hundred eleven thousand, two hundred twenty-one".