221304020003 has 12 divisors (see below), whose sum is σ = 243270178704. Its totient is φ = 201170046000.

The previous prime is 221304019997. The next prime is 221304020017. The reversal of 221304020003 is 300020403122.

It is not a de Polignac number, because 221304020003 - 2⁶ = 221304019939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221304020023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1697825 + ... + 1823517.

It is an arithmetic number, because the mean of its divisors is an integer number (20272514892).

Almost surely, 2^221304020003 is an apocalyptic number.

221304020003 is a deficient number, since it is larger than the sum of its proper divisors (21966158701).

221304020003 is a wasteful number, since it uses less digits than its factorization.

221304020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140266 (or 140255 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 221304020003 its reverse (300020403122), we get a palindrome (521324423125).

The spelling of 221304020003 in words is "two hundred twenty-one billion, three hundred four million, twenty thousand, three".