121300203 has 4 divisors (see below), whose sum is σ = 161733608. Its totient is φ = 80866800.

The previous prime is 121300159. The next prime is 121300261. The reversal of 121300203 is 302003121.

It is a happy number.

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

It is not a de Polignac number, because 121300203 - 2¹⁷ = 121169131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121300273) 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, 20216698 + ... + 20216703.

It is an arithmetic number, because the mean of its divisors is an integer number (40433402).

Almost surely, 2^121300203 is an apocalyptic number.

121300203 is a deficient number, since it is larger than the sum of its proper divisors (40433405).

121300203 is an equidigital number, since it uses as much as digits as its factorization.

121300203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40433404.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 121300203 is about 11013.6371376580. The cubic root of 121300203 is about 495.0174506653.

Adding to 121300203 its reverse (302003121), we get a palindrome (423303324).

The spelling of 121300203 in words is "one hundred twenty-one million, three hundred thousand, two hundred three".