220021210220 has 144 divisors (see below), whose sum is σ = 546212090592. Its totient is φ = 74213314560.

The previous prime is 220021210177. The next prime is 220021210301. The reversal of 220021210220 is 22012120022.

220021210220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 220021210195 and 220021210204.

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 47 ways as a sum of consecutive naturals, for example, 65461340 + ... + 65464700.

It is an arithmetic number, because the mean of its divisors is an integer number (3793139518).

Almost surely, 2^220021210220 is an apocalyptic number.

220021210220 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 220021210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273106045296).

220021210220 is an abundant number, since it is smaller than the sum of its proper divisors (326190880372).

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

220021210220 is a wasteful number, since it uses less digits than its factorization.

220021210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220021210220 its reverse (22012120022), we get a palindrome (242033330242).

The spelling of 220021210220 in words is "two hundred twenty billion, twenty-one million, two hundred ten thousand, two hundred twenty".