202212220 has 60 divisors (see below), whose sum is σ = 495508104. Its totient is φ = 69313440.

The previous prime is 202212211. The next prime is 202212233. The reversal of 202212220 is 22212202.

It is a self number, because there is not a number n which added to its sum of digits gives 202212220.

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 19 ways as a sum of consecutive naturals, for example, 45915 + ... + 50125.

Almost surely, 2^202212220 is an apocalyptic number.

202212220 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 202212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247754052).

202212220 is an abundant number, since it is smaller than the sum of its proper divisors (293295884).

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

202212220 is an equidigital number, since it uses as much as digits as its factorization.

202212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 202212220 is about 14220.1343172278. The cubic root of 202212220 is about 586.9518363666.

Adding to 202212220 its reverse (22212202), we get a palindrome (224424422).

The spelling of 202212220 in words is "two hundred two million, two hundred twelve thousand, two hundred twenty".