203200323121 has 4 divisors (see below), whose sum is σ = 203232773952. Its totient is φ = 203167872292.

The previous prime is 203200323101. The next prime is 203200323127. The reversal of 203200323121 is 121323002302.

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 203200323121 - 2⁹ = 203200322609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203200323127) 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, 16216021 + ... + 16228546.

It is an arithmetic number, because the mean of its divisors is an integer number (50808193488).

Almost surely, 2^203200323121 is an apocalyptic number.

It is an amenable number.

203200323121 is a deficient number, since it is larger than the sum of its proper divisors (32450831).

203200323121 is an equidigital number, since it uses as much as digits as its factorization.

203200323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32450830.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 203200323121 its reverse (121323002302), we get a palindrome (324523325423).

The spelling of 203200323121 in words is "two hundred three billion, two hundred million, three hundred twenty-three thousand, one hundred twenty-one".