203221113 has 4 divisors (see below), whose sum is σ = 270961488. Its totient is φ = 135480740.

The previous prime is 203221097. The next prime is 203221153. The reversal of 203221113 is 311122302.

203221113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 203221113 - 2⁴ = 203221097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203221092 and 203221101.

It is not an unprimeable number, because it can be changed into a prime (203221153) 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, 33870183 + ... + 33870188.

It is an arithmetic number, because the mean of its divisors is an integer number (67740372).

Almost surely, 2^203221113 is an apocalyptic number.

It is an amenable number.

203221113 is a deficient number, since it is larger than the sum of its proper divisors (67740375).

203221113 is an equidigital number, since it uses as much as digits as its factorization.

203221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67740374.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 203221113 is about 14255.5642820619. The cubic root of 203221113 is about 587.9263727284.

Adding to 203221113 its reverse (311122302), we get a palindrome (514343415).

The spelling of 203221113 in words is "two hundred three million, two hundred twenty-one thousand, one hundred thirteen".