138112011 has 12 divisors (see below), whose sum is σ = 203259888. Its totient is φ = 90337104.

The previous prime is 138111989. The next prime is 138112027. The reversal of 138112011 is 110211831.

It is a happy number.

It is not a de Polignac number, because 138112011 - 2⁶ = 138111947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138112031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144295 + ... + 145248.

It is an arithmetic number, because the mean of its divisors is an integer number (16938324).

Almost surely, 2^138112011 is an apocalyptic number.

138112011 is a deficient number, since it is larger than the sum of its proper divisors (65147877).

138112011 is a wasteful number, since it uses less digits than its factorization.

138112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289602 (or 289599 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 138112011 is about 11752.1066622117. The cubic root of 138112011 is about 516.9047022950.

Adding to 138112011 its reverse (110211831), we get a palindrome (248323842).

The spelling of 138112011 in words is "one hundred thirty-eight million, one hundred twelve thousand, eleven".