203230202221 has 4 divisors (see below), whose sum is σ = 204713634492. Its totient is φ = 201746769952.

The previous prime is 203230202213. The next prime is 203230202249. The reversal of 203230202221 is 122202032302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119706312196 + 83523890025 = 345986^2 + 289005^2 .

It is a cyclic number.

It is not a de Polignac number, because 203230202221 - 2³ = 203230202213 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 (203230202281) 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, 741715930 + ... + 741716203.

It is an arithmetic number, because the mean of its divisors is an integer number (51178408623).

Almost surely, 2^203230202221 is an apocalyptic number.

It is an amenable number.

203230202221 is a deficient number, since it is larger than the sum of its proper divisors (1483432271).

203230202221 is a wasteful number, since it uses less digits than its factorization.

203230202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483432270.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 203230202221 its reverse (122202032302), we get a palindrome (325432234523).

The spelling of 203230202221 in words is "two hundred three billion, two hundred thirty million, two hundred two thousand, two hundred twenty-one".