243300022109 has 2 divisors, whose sum is σ = 243300022110. Its totient is φ = 243300022108.

The previous prime is 243300022093. The next prime is 243300022127. The reversal of 243300022109 is 901220003342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243125914084 + 174108025 = 493078^2 + 13195^2 .

It is a cyclic number.

It is not a de Polignac number, because 243300022109 - 2⁴ = 243300022093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243300021109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121650011054 + 121650011055.

It is an arithmetic number, because the mean of its divisors is an integer number (121650011055).

Almost surely, 2^243300022109 is an apocalyptic number.

It is an amenable number.

243300022109 is a deficient number, since it is larger than the sum of its proper divisors (1).

243300022109 is an equidigital number, since it uses as much as digits as its factorization.

243300022109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 243300022109 in words is "two hundred forty-three billion, three hundred million, twenty-two thousand, one hundred nine".