331222220222220 has 240 divisors, whose sum is σ = 1041870358710720. Its totient is φ = 88086893078016.

The previous prime is 331222220222213. The next prime is 331222220222273. The reversal of 331222220222220 is 22222022222133.

331222220222220 is a `hidden beast` number, since 3 + 3 + 12 + 222 + 202 + 2 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1676152462 + ... + 1676350058.

It is an arithmetic number, because the mean of its divisors is an integer number (4341126494628).

Almost surely, 2^{331222220222220} is an apocalyptic number.

331222220222220 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 331222220222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520935179355360).

331222220222220 is an abundant number, since it is smaller than the sum of its proper divisors (710648138488500).

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

331222220222220 is a wasteful number, since it uses less digits than its factorization.

331222220222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200414 (or 200403 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 331222220222220 its reverse (22222022222133), we get a palindrome (353444242444353).

The spelling of 331222220222220 in words is "three hundred thirty-one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty".