203222230221 has 4 divisors (see below), whose sum is σ = 270962973632. Its totient is φ = 135481486812.

The previous prime is 203222230217. The next prime is 203222230223. The reversal of 203222230221 is 122032222302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 203222230221 - 2² = 203222230217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203222230223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33870371701 + ... + 33870371706.

It is an arithmetic number, because the mean of its divisors is an integer number (67740743408).

Almost surely, 2^203222230221 is an apocalyptic number.

It is an amenable number.

203222230221 is a deficient number, since it is larger than the sum of its proper divisors (67740743411).

203222230221 is an equidigital number, since it uses as much as digits as its factorization.

203222230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67740743410.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 203222230221 its reverse (122032222302), we get a palindrome (325254452523).

The spelling of 203222230221 in words is "two hundred three billion, two hundred twenty-two million, two hundred thirty thousand, two hundred twenty-one".