203103223221 has 8 divisors (see below), whose sum is σ = 270887404960. Its totient is φ = 135360595152.

The previous prime is 203103223181. The next prime is 203103223243. The reversal of 203103223221 is 122322301302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203103223221 - 2⁹ = 203103222709 is a prime.

It is a super-2 number, since 2×203103223221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203103222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10377010 + ... + 10396563.

It is an arithmetic number, because the mean of its divisors is an integer number (33860925620).

Almost surely, 2^203103223221 is an apocalyptic number.

It is an amenable number.

203103223221 is a deficient number, since it is larger than the sum of its proper divisors (67784181739).

203103223221 is a wasteful number, since it uses less digits than its factorization.

203103223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20776835.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203103223221 its reverse (122322301302), we get a palindrome (325425524523).

The spelling of 203103223221 in words is "two hundred three billion, one hundred three million, two hundred twenty-three thousand, two hundred twenty-one".