101118138 has 16 divisors (see below), whose sum is σ = 220621536. Its totient is φ = 30641840.

The previous prime is 101118137. The next prime is 101118161. The reversal of 101118138 is 831811101.

It is not an unprimeable number, because it can be changed into a prime (101118137) 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 7 ways as a sum of consecutive naturals, for example, 765981 + ... + 766112.

It is an arithmetic number, because the mean of its divisors is an integer number (13788846).

Almost surely, 2^101118138 is an apocalyptic number.

101118138 is an abundant number, since it is smaller than the sum of its proper divisors (119503398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101118138 is a wasteful number, since it uses less digits than its factorization.

101118138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532109.

The product of its (nonzero) digits is 192, while the sum is 24.

The square root of 101118138 is about 10055.7514885761. The cubic root of 101118138 is about 465.8824542195.

Adding to 101118138 its reverse (831811101), we get a palindrome (932929239).

The spelling of 101118138 in words is "one hundred one million, one hundred eighteen thousand, one hundred thirty-eight".