243021052205 has 16 divisors (see below), whose sum is σ = 307039550400. Its totient is φ = 184145022720.

The previous prime is 243021052201. The next prime is 243021052223. The reversal of 243021052205 is 502250120342.

It is not a de Polignac number, because 243021052205 - 2² = 243021052201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243021052201) 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, 177566 + ... + 719424.

It is an arithmetic number, because the mean of its divisors is an integer number (19189971900).

Almost surely, 2^243021052205 is an apocalyptic number.

It is an amenable number.

243021052205 is a deficient number, since it is larger than the sum of its proper divisors (64018498195).

243021052205 is a wasteful number, since it uses less digits than its factorization.

243021052205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546604.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 243021052205 its reverse (502250120342), we get a palindrome (745271172547).

The spelling of 243021052205 in words is "two hundred forty-three billion, twenty-one million, fifty-two thousand, two hundred five".