220220321856 has 28 divisors (see below), whose sum is σ = 582666268752. Its totient is φ = 73406773888.

The previous prime is 220220321837. The next prime is 220220321857. The reversal of 220220321856 is 658123022022.

It is not an unprimeable number, because it can be changed into a prime (220220321857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573490230 + ... + 573490613.

Almost surely, 2^220220321856 is an apocalyptic number.

It is an amenable number.

220220321856 is an abundant number, since it is smaller than the sum of its proper divisors (362445946896).

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

220220321856 is a wasteful number, since it uses less digits than its factorization.

220220321856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146980858 (or 1146980848 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 220220321856 its reverse (658123022022), we get a palindrome (878343343878).

The spelling of 220220321856 in words is "two hundred twenty billion, two hundred twenty million, three hundred twenty-one thousand, eight hundred fifty-six".