121123130203 has 4 divisors (see below), whose sum is σ = 121126482720. Its totient is φ = 121119777688.

The previous prime is 121123130189. The next prime is 121123130207. The reversal of 121123130203 is 302031321121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302031321121 = 1873 ⋅161255377.

It is a cyclic number.

It is not a de Polignac number, because 121123130203 - 2²¹ = 121121033051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121123130207) 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, 1621468 + ... + 1694521.

It is an arithmetic number, because the mean of its divisors is an integer number (30281620680).

Almost surely, 2^121123130203 is an apocalyptic number.

121123130203 is a deficient number, since it is larger than the sum of its proper divisors (3352517).

121123130203 is an equidigital number, since it uses as much as digits as its factorization.

121123130203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352516.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121123130203 its reverse (302031321121), we get a palindrome (423154451324).

The spelling of 121123130203 in words is "one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty thousand, two hundred three".