121224211203 has 4 divisors (see below), whose sum is σ = 161632281608. Its totient is φ = 80816140800.

The previous prime is 121224211193. The next prime is 121224211249. The reversal of 121224211203 is 302112422121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302112422121 = 3 ⋅100704140707.

It is not a de Polignac number, because 121224211203 - 2⁴ = 121224211187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121224211203.

It is not an unprimeable number, because it can be changed into a prime (121224231203) 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, 20204035198 + ... + 20204035203.

It is an arithmetic number, because the mean of its divisors is an integer number (40408070402).

Almost surely, 2^121224211203 is an apocalyptic number.

121224211203 is a deficient number, since it is larger than the sum of its proper divisors (40408070405).

121224211203 is an equidigital number, since it uses as much as digits as its factorization.

121224211203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40408070404.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121224211203 its reverse (302112422121), we get a palindrome (423336633324).

The spelling of 121224211203 in words is "one hundred twenty-one billion, two hundred twenty-four million, two hundred eleven thousand, two hundred three".