123243500522011 has 2 divisors, whose sum is σ = 123243500522012. Its totient is φ = 123243500522010.

The previous prime is 123243500521991. The next prime is 123243500522017. The reversal of 123243500522011 is 110225005342321.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (110225005342321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123243500522011 - 2¹¹ = 123243500519963 is a prime.

It is not a weakly prime, because it can be changed into another prime (123243500522017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621750261005 + 61621750261006.

It is an arithmetic number, because the mean of its divisors is an integer number (61621750261006).

Almost surely, 2^{123243500522011} is an apocalyptic number.

123243500522011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243500522011 is an equidigital number, since it uses as much as digits as its factorization.

123243500522011 is an evil number, because the sum of its binary digits is even.

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

Adding to 123243500522011 its reverse (110225005342321), we get a palindrome (233468505864332).

The spelling of 123243500522011 in words is "one hundred twenty-three trillion, two hundred forty-three billion, five hundred million, five hundred twenty-two thousand, eleven".