243103432121 has 4 divisors (see below), whose sum is σ = 265203744144. Its totient is φ = 221003120100.

The previous prime is 243103432109. The next prime is 243103432133. The reversal of 243103432121 is 121234301342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (243103432109) and next prime (243103432133).

It is a cyclic number.

It is not a de Polignac number, because 243103432121 - 2⁶ = 243103432057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243103432021) 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, 11050155995 + ... + 11050156016.

It is an arithmetic number, because the mean of its divisors is an integer number (66300936036).

Almost surely, 2^243103432121 is an apocalyptic number.

It is an amenable number.

243103432121 is a deficient number, since it is larger than the sum of its proper divisors (22100312023).

243103432121 is a wasteful number, since it uses less digits than its factorization.

243103432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22100312022.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 243103432121 its reverse (121234301342), we get a palindrome (364337733463).

The spelling of 243103432121 in words is "two hundred forty-three billion, one hundred three million, four hundred thirty-two thousand, one hundred twenty-one".