20003210220 has 144 divisors (see below), whose sum is σ = 65334366720. Its totient is φ = 4559458176.

The previous prime is 20003210209. The next prime is 20003210231. The reversal of 20003210220 is 2201230002.

It is an interprime number because it is at equal distance from previous prime (20003210209) and next prime (20003210231).

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 = 20003210196 and 20003210205.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1069711 + ... + 1088249.

It is an arithmetic number, because the mean of its divisors is an integer number (453710880).

Almost surely, 2^20003210220 is an apocalyptic number.

20003210220 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 20003210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32667183360).

20003210220 is an abundant number, since it is smaller than the sum of its proper divisors (45331156500).

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

20003210220 is a wasteful number, since it uses less digits than its factorization.

20003210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18932 (or 18923 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20003210220 its reverse (2201230002), we get a palindrome (22204440222).

The spelling of 20003210220 in words is "twenty billion, three million, two hundred ten thousand, two hundred twenty".