200221220220 has 96 divisors (see below), whose sum is σ = 642398937600. Its totient is φ = 45644062464.

The previous prime is 200221220179. The next prime is 200221220239. The reversal of 200221220220 is 22022122002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 200221220220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469735 + ... + 788094.

It is an arithmetic number, because the mean of its divisors is an integer number (6691655600).

Almost surely, 2^200221220220 is an apocalyptic number.

200221220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200221220220 is an abundant number, since it is smaller than the sum of its proper divisors (442177717380).

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

200221220220 is a wasteful number, since it uses less digits than its factorization.

200221220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258227 (or 1258225 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 200221220220 its reverse (22022122002), we get a palindrome (222243342222).

The spelling of 200221220220 in words is "two hundred billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty".