243010020121 has 16 divisors (see below), whose sum is σ = 280283938560. Its totient is φ = 208368899280.

The previous prime is 243010020067. The next prime is 243010020181. The reversal of 243010020121 is 121020010342.

It is a cyclic number.

It is not a de Polignac number, because 243010020121 - 2¹¹ = 243010018073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243010020095 and 243010020104.

It is not an unprimeable number, because it can be changed into a prime (243010020181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2513631 + ... + 2608516.

It is an arithmetic number, because the mean of its divisors is an integer number (17517746160).

Almost surely, 2^243010020121 is an apocalyptic number.

It is an amenable number.

243010020121 is a deficient number, since it is larger than the sum of its proper divisors (37273918439).

243010020121 is a wasteful number, since it uses less digits than its factorization.

243010020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122404.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 243010020121 its reverse (121020010342), we get a palindrome (364030030463).

The spelling of 243010020121 in words is "two hundred forty-three billion, ten million, twenty thousand, one hundred twenty-one".