320122220220 has 72 divisors (see below), whose sum is σ = 1059313535280. Its totient is φ = 77605386240.

The previous prime is 320122220203. The next prime is 320122220281. The reversal of 320122220220 is 22022221023.

320122220220 is a `hidden beast` number, since 3 + 201 + 22 + 220 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 320122220193 and 320122220202.

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 23 ways as a sum of consecutive naturals, for example, 80836965 + ... + 80840924.

It is an arithmetic number, because the mean of its divisors is an integer number (14712687990).

Almost surely, 2^320122220220 is an apocalyptic number.

320122220220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320122220220 is an abundant number, since it is smaller than the sum of its proper divisors (739191315060).

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

320122220220 is a wasteful number, since it uses less digits than its factorization.

320122220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161677915 (or 161677910 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 320122220220 its reverse (22022221023), we get a palindrome (342144441243).

The spelling of 320122220220 in words is "three hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty".