20003333220 has 288 divisors, whose sum is σ = 72199475712. Its totient is φ = 4432564224.

The previous prime is 20003333213. The next prime is 20003333221. The reversal of 20003333220 is 2233330002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20003333193 and 20003333202.

It is not an unprimeable number, because it can be changed into a prime (20003333221) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 904009 + ... + 925871.

It is an arithmetic number, because the mean of its divisors is an integer number (250692624).

Almost surely, 2^20003333220 is an apocalyptic number.

20003333220 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 20003333220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36099737856).

20003333220 is an abundant number, since it is smaller than the sum of its proper divisors (52196142492).

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

20003333220 is a wasteful number, since it uses less digits than its factorization.

20003333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21931 (or 21926 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

Adding to 20003333220 its reverse (2233330002), we get a palindrome (22236663222).

The spelling of 20003333220 in words is "twenty billion, three million, three hundred thirty-three thousand, two hundred twenty".