331212020321 has 32 divisors (see below), whose sum is σ = 422086291200. Its totient is φ = 252790997760.

The previous prime is 331212020281. The next prime is 331212020333. The reversal of 331212020321 is 123020212133.

It is not a de Polignac number, because 331212020321 - 2⁶ = 331212020257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331212020293 and 331212020302.

It is not an unprimeable number, because it can be changed into a prime (331212020341) 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 31 ways as a sum of consecutive naturals, for example, 2870066 + ... + 2983236.

It is an arithmetic number, because the mean of its divisors is an integer number (13190196600).

Almost surely, 2^331212020321 is an apocalyptic number.

It is an amenable number.

331212020321 is a deficient number, since it is larger than the sum of its proper divisors (90874270879).

331212020321 is a wasteful number, since it uses less digits than its factorization.

331212020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114329.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 331212020321 its reverse (123020212133), we get a palindrome (454232232454).

The spelling of 331212020321 in words is "three hundred thirty-one billion, two hundred twelve million, twenty thousand, three hundred twenty-one".