220221331320 has 128 divisors (see below), whose sum is σ = 701533224000. Its totient is φ = 55112687616.

The previous prime is 220221331313. The next prime is 220221331397. The reversal of 220221331320 is 23133122022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557302 + ... + 866618.

Almost surely, 2^220221331320 is an apocalyptic number.

220221331320 is a gapful number since it is divisible by the number (20) 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 220221331320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350766612000).

220221331320 is an abundant number, since it is smaller than the sum of its proper divisors (481311892680).

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

220221331320 is a wasteful number, since it uses less digits than its factorization.

220221331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309697 (or 309693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220221331320 its reverse (23133122022), we get a palindrome (243354453342).

The spelling of 220221331320 in words is "two hundred twenty billion, two hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty".