220020003 has 32 divisors (see below), whose sum is σ = 373752320. Its totient is φ = 125310240.

The previous prime is 220019993. The next prime is 220020011. The reversal of 220020003 is 300020022.

It is not a de Polignac number, because 220020003 - 2⁶ = 220019939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220020043) 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, 60801 + ... + 64317.

It is an arithmetic number, because the mean of its divisors is an integer number (11679760).

Almost surely, 2^220020003 is an apocalyptic number.

220020003 is a deficient number, since it is larger than the sum of its proper divisors (153732317).

220020003 is a wasteful number, since it uses less digits than its factorization.

220020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864 (or 3858 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 220020003 is about 14833.0712598571. The cubic root of 220020003 is about 603.6993692352.

Adding to 220020003 its reverse (300020022), we get a palindrome (520040025).

The spelling of 220020003 in words is "two hundred twenty million, twenty thousand, three".