331112222220 has 96 divisors (see below), whose sum is σ = 999351779328. Its totient is φ = 81429357312.

The previous prime is 331112222141. The next prime is 331112222239. The reversal of 331112222220 is 22222211133.

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 31 ways as a sum of consecutive naturals, for example, 652597 + ... + 1043123.

It is an arithmetic number, because the mean of its divisors is an integer number (10409914368).

Almost surely, 2^331112222220 is an apocalyptic number.

331112222220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331112222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499675889664).

331112222220 is an abundant number, since it is smaller than the sum of its proper divisors (668239557108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331112222220 is a wasteful number, since it uses less digits than its factorization.

331112222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391639 (or 391637 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 331112222220 its reverse (22222211133), we get a palindrome (353334433353).

The spelling of 331112222220 in words is "three hundred thirty-one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty".