243420102201 has 16 divisors (see below), whose sum is σ = 330703041600. Its totient is φ = 159208969920.

The previous prime is 243420102199. The next prime is 243420102209. The reversal of 243420102201 is 102201024342.

It is not a de Polignac number, because 243420102201 - 2¹ = 243420102199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243420102209) 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, 3711786 + ... + 3776796.

It is an arithmetic number, because the mean of its divisors is an integer number (20668940100).

Almost surely, 2^243420102201 is an apocalyptic number.

It is an amenable number.

243420102201 is a deficient number, since it is larger than the sum of its proper divisors (87282939399).

243420102201 is a wasteful number, since it uses less digits than its factorization.

243420102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88616.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 243420102201 its reverse (102201024342), we get a palindrome (345621126543).

The spelling of 243420102201 in words is "two hundred forty-three billion, four hundred twenty million, one hundred two thousand, two hundred one".