202220220 has 96 divisors (see below), whose sum is σ = 579878208. Its totient is φ = 52641792.

The previous prime is 202220201. The next prime is 202220233. The reversal of 202220220 is 22022202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 202220196 and 202220205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 599892 + ... + 600228.

It is an arithmetic number, because the mean of its divisors is an integer number (6040398).

Almost surely, 2^202220220 is an apocalyptic number.

202220220 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 202220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289939104).

202220220 is an abundant number, since it is smaller than the sum of its proper divisors (377657988).

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

202220220 is a wasteful number, since it uses less digits than its factorization.

202220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 202220220 is about 14220.4156057409. The cubic root of 202220220 is about 586.9595766716.

Adding to 202220220 its reverse (22022202), we get a palindrome (224242422).

The spelling of 202220220 in words is "two hundred two million, two hundred twenty thousand, two hundred twenty".