331021222 has 16 divisors (see below), whose sum is σ = 567719712. Its totient is φ = 141802560.

The previous prime is 331021213. The next prime is 331021259. The reversal of 331021222 is 222120133.

It is a junction number, because it is equal to n+sod(n) for n = 331021196 and 331021205.

It is a congruent number.

It is an unprimeable number.

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, 40818 + ... + 48250.

It is an arithmetic number, because the mean of its divisors is an integer number (35482482).

Almost surely, 2^331021222 is an apocalyptic number.

331021222 is a deficient number, since it is larger than the sum of its proper divisors (236698490).

331021222 is a wasteful number, since it uses less digits than its factorization.

331021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 331021222 is about 18193.9886226193. The cubic root of 331021222 is about 691.7544249287.

Adding to 331021222 its reverse (222120133), we get a palindrome (553141355).

The spelling of 331021222 in words is "three hundred thirty-one million, twenty-one thousand, two hundred twenty-two".