123368138011 has 2 divisors, whose sum is σ = 123368138012. Its totient is φ = 123368138010.

The previous prime is 123368138009. The next prime is 123368138041. The reversal of 123368138011 is 110831863321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123368138011 - 2¹ = 123368138009 is a prime.

It is a super-2 number, since 2×123368138011² (a number of 23 digits) contains 22 as substring.

Together with 123368138009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123368138041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61684069005 + 61684069006.

It is an arithmetic number, because the mean of its divisors is an integer number (61684069006).

Almost surely, 2^123368138011 is an apocalyptic number.

123368138011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123368138011 is an equidigital number, since it uses as much as digits as its factorization.

123368138011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 123368138011 in words is "one hundred twenty-three billion, three hundred sixty-eight million, one hundred thirty-eight thousand, eleven".