243120210205 has 16 divisors (see below), whose sum is σ = 294593656320. Its totient is φ = 192599696128.

The previous prime is 243120210173. The next prime is 243120210209. The reversal of 243120210205 is 502012021342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 243120210205 - 2⁵ = 243120210173 is a prime.

It is a super-2 number, since 2×243120210205² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120210209) 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, 428136 + ... + 818254.

It is an arithmetic number, because the mean of its divisors is an integer number (18412103520).

Almost surely, 2^243120210205 is an apocalyptic number.

It is an amenable number.

243120210205 is a deficient number, since it is larger than the sum of its proper divisors (51473446115).

243120210205 is a wasteful number, since it uses less digits than its factorization.

243120210205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391340.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 243120210205 its reverse (502012021342), we get a palindrome (745132231547).

The spelling of 243120210205 in words is "two hundred forty-three billion, one hundred twenty million, two hundred ten thousand, two hundred five".