123534540211 has 2 divisors, whose sum is σ = 123534540212. Its totient is φ = 123534540210.

The previous prime is 123534540091. The next prime is 123534540293. The reversal of 123534540211 is 112045435321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123534540211 - 2²⁵ = 123500985779 is a prime.

It is not a weakly prime, because it can be changed into another prime (123534540911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61767270105 + 61767270106.

It is an arithmetic number, because the mean of its divisors is an integer number (61767270106).

Almost surely, 2^123534540211 is an apocalyptic number.

123534540211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123534540211 is an equidigital number, since it uses as much as digits as its factorization.

123534540211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 123534540211 its reverse (112045435321), we get a palindrome (235579975532).

The spelling of 123534540211 in words is "one hundred twenty-three billion, five hundred thirty-four million, five hundred forty thousand, two hundred eleven".