203021113223 has 4 divisors (see below), whose sum is σ = 206051279160. Its totient is φ = 199990947288.

The previous prime is 203021113213. The next prime is 203021113237. The reversal of 203021113223 is 322311120302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322311120302 = 2 ⋅161155560151.

It is a cyclic number.

It is not a de Polignac number, because 203021113223 - 2⁶ = 203021113159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203021113195 and 203021113204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203021113213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515082868 + ... + 1515083001.

It is an arithmetic number, because the mean of its divisors is an integer number (51512819790).

Almost surely, 2^203021113223 is an apocalyptic number.

203021113223 is a deficient number, since it is larger than the sum of its proper divisors (3030165937).

203021113223 is an equidigital number, since it uses as much as digits as its factorization.

203021113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030165936.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203021113223 its reverse (322311120302), we get a palindrome (525332233525).

The spelling of 203021113223 in words is "two hundred three billion, twenty-one million, one hundred thirteen thousand, two hundred twenty-three".