203323230220221 has 6 divisors (see below), whose sum is σ = 293689110318110. Its totient is φ = 135548820146808.

The previous prime is 203323230220109. The next prime is 203323230220277. The reversal of 203323230220221 is 122022032323302.

203323230220221 is a `hidden beast` number, since 2 + 0 + 332 + 3 + 2 + 302 + 2 + 0 + 2 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 199241270631225 + 4081959588996 = 14115285^2 + 2020386^2 .

It is not a de Polignac number, because 203323230220221 - 2¹³ = 203323230212029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203323230225221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11295735012226 + ... + 11295735012243.

Almost surely, 2^{203323230220221} is an apocalyptic number.

It is an amenable number.

203323230220221 is a deficient number, since it is larger than the sum of its proper divisors (90365880097889).

203323230220221 is a wasteful number, since it uses less digits than its factorization.

203323230220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22591470024475 (or 22591470024472 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 203323230220221 its reverse (122022032323302), we get a palindrome (325345262543523).

The spelling of 203323230220221 in words is "two hundred three trillion, three hundred twenty-three billion, two hundred thirty million, two hundred twenty thousand, two hundred twenty-one".