101138851 has 4 divisors (see below), whose sum is σ = 110333304. Its totient is φ = 91944400.

The previous prime is 101138837. The next prime is 101138867. The reversal of 101138851 is 158831101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101138851 - 2⁵ = 101138819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101138251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4597210 + ... + 4597231.

It is an arithmetic number, because the mean of its divisors is an integer number (27583326).

Almost surely, 2^101138851 is an apocalyptic number.

101138851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101138851 is a deficient number, since it is larger than the sum of its proper divisors (9194453).

101138851 is an equidigital number, since it uses as much as digits as its factorization.

101138851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194452.

The product of its (nonzero) digits is 960, while the sum is 28.

The square root of 101138851 is about 10056.7813439490. The cubic root of 101138851 is about 465.9142624412.

Adding to 101138851 its reverse (158831101), we get a palindrome (259969952).

The spelling of 101138851 in words is "one hundred one million, one hundred thirty-eight thousand, eight hundred fifty-one".