243121240101 has 16 divisors (see below), whose sum is σ = 325411413120. Its totient is φ = 161456911680.

The previous prime is 243121240093. The next prime is 243121240111. The reversal of 243121240101 is 101042121342.

243121240101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243121240101 - 2³ = 243121240093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121240111) 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 15 ways as a sum of consecutive naturals, for example, 893511 + ... + 1133403.

It is an arithmetic number, because the mean of its divisors is an integer number (20338213320).

Almost surely, 2^243121240101 is an apocalyptic number.

It is an amenable number.

243121240101 is a deficient number, since it is larger than the sum of its proper divisors (82290173019).

243121240101 is a wasteful number, since it uses less digits than its factorization.

243121240101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241196.

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

Adding to 243121240101 its reverse (101042121342), we get a palindrome (344163361443).

The spelling of 243121240101 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty thousand, one hundred one".