243043132112101 has 2 divisors, whose sum is σ = 243043132112102. Its totient is φ = 243043132112100.

The previous prime is 243043132112069. The next prime is 243043132112219. The reversal of 243043132112101 is 101211231340342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240133020243076 + 2910111869025 = 15496226^2 + 1705905^2 .

It is a cyclic number.

It is not a de Polignac number, because 243043132112101 - 2⁵ = 243043132112069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243043132112101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243043132119101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121521566056050 + 121521566056051.

It is an arithmetic number, because the mean of its divisors is an integer number (121521566056051).

Almost surely, 2^{243043132112101} is an apocalyptic number.

It is an amenable number.

243043132112101 is a deficient number, since it is larger than the sum of its proper divisors (1).

243043132112101 is an equidigital number, since it uses as much as digits as its factorization.

243043132112101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 243043132112101 its reverse (101211231340342), we get a palindrome (344254363452443).

The spelling of 243043132112101 in words is "two hundred forty-three trillion, forty-three billion, one hundred thirty-two million, one hundred twelve thousand, one hundred one".