121224203 has 4 divisors (see below), whose sum is σ = 121400328. Its totient is φ = 121048080.

The previous prime is 121224133. The next prime is 121224217. The reversal of 121224203 is 302422121.

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

It is a cyclic number.

It is not a de Polignac number, because 121224203 - 2¹² = 121220107 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121224223) 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, 87026 + ... + 88407.

It is an arithmetic number, because the mean of its divisors is an integer number (30350082).

Almost surely, 2^121224203 is an apocalyptic number.

121224203 is a deficient number, since it is larger than the sum of its proper divisors (176125).

121224203 is an equidigital number, since it uses as much as digits as its factorization.

121224203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176124.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121224203 is about 11010.1863290319. The cubic root of 121224203 is about 494.9140455453.

Adding to 121224203 its reverse (302422121), we get a palindrome (423646324).

The spelling of 121224203 in words is "one hundred twenty-one million, two hundred twenty-four thousand, two hundred three".