243121245203 has 32 divisors (see below), whose sum is σ = 254516477952. Its totient is φ = 231981926400.

The previous prime is 243121245181. The next prime is 243121245233. The reversal of 243121245203 is 302542121342.

243121245203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 243121245203 - 2¹⁶ = 243121179667 is a prime.

It is a super-2 number, since 2×243121245203² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243121245233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577484933 + ... + 577485353.

It is an arithmetic number, because the mean of its divisors is an integer number (7953639936).

Almost surely, 2^243121245203 is an apocalyptic number.

243121245203 is a deficient number, since it is larger than the sum of its proper divisors (11395232749).

243121245203 is a wasteful number, since it uses less digits than its factorization.

243121245203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 243121245203 its reverse (302542121342), we get a palindrome (545663366545).

The spelling of 243121245203 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, two hundred three".