320212332220 has 48 divisors (see below), whose sum is σ = 736169632128. Its totient is φ = 116029373760.

The previous prime is 320212332157. The next prime is 320212332227. The reversal of 320212332220 is 22233212023.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 320212332191 and 320212332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320212332227) 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 15 ways as a sum of consecutive naturals, for example, 2509314 + ... + 2633833.

It is an arithmetic number, because the mean of its divisors is an integer number (15336867336).

Almost surely, 2^320212332220 is an apocalyptic number.

It is an amenable number.

320212332220 is an abundant number, since it is smaller than the sum of its proper divisors (415957299908).

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

320212332220 is a wasteful number, since it uses less digits than its factorization.

320212332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143450 (or 5143448 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 320212332220 its reverse (22233212023), we get a palindrome (342445544243).

The spelling of 320212332220 in words is "three hundred twenty billion, two hundred twelve million, three hundred thirty-two thousand, two hundred twenty".