121234413504203 has 4 divisors (see below), whose sum is σ = 121238252132928. Its totient is φ = 121230574875480.

The previous prime is 121234413504079. The next prime is 121234413504247. The reversal of 121234413504203 is 302405314432121.

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 121234413504203 - 2⁸ = 121234413503947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121234413504403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919266988 + ... + 1919330153.

It is an arithmetic number, because the mean of its divisors is an integer number (30309563033232).

Almost surely, 2^{121234413504203} is an apocalyptic number.

121234413504203 is a deficient number, since it is larger than the sum of its proper divisors (3838628725).

121234413504203 is an equidigital number, since it uses as much as digits as its factorization.

121234413504203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838628724.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 121234413504203 its reverse (302405314432121), we get a palindrome (423639727936324).

The spelling of 121234413504203 in words is "one hundred twenty-one trillion, two hundred thirty-four billion, four hundred thirteen million, five hundred four thousand, two hundred three".