20020202220 has 96 divisors (see below), whose sum is σ = 56735078400. Its totient is φ = 5274388224.

The previous prime is 20020202161. The next prime is 20020202221. The reversal of 20020202220 is 2220202002.

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 = 20020202196 and 20020202205.

It is not an unprimeable number, because it can be changed into a prime (20020202221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2343597 + ... + 2352123.

It is an arithmetic number, because the mean of its divisors is an integer number (590990400).

Almost surely, 2^20020202220 is an apocalyptic number.

20020202220 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 20020202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28367539200).

20020202220 is an abundant number, since it is smaller than the sum of its proper divisors (36714876180).

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

20020202220 is a wasteful number, since it uses less digits than its factorization.

20020202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007 (or 9005 counting only the distinct ones).

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

Adding to 20020202220 its reverse (2220202002), we get a palindrome (22240404222).

The spelling of 20020202220 in words is "twenty billion, twenty million, two hundred two thousand, two hundred twenty".