11121271806 has 8 divisors (see below), whose sum is σ = 22242543624. Its totient is φ = 3707090600.

The previous prime is 11121271757. The next prime is 11121271829. The reversal of 11121271806 is 60817212111.

It is a sphenic number, since it is the product of 3 distinct primes.

11121271806 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926772645 + ... + 926772656.

It is an arithmetic number, because the mean of its divisors is an integer number (2780317953).

Almost surely, 2^11121271806 is an apocalyptic number.

11121271806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11121271806 is a wasteful number, since it uses less digits than its factorization.

11121271806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853545306.

The product of its (nonzero) digits is 1344, while the sum is 30.

Adding to 11121271806 its reverse (60817212111), we get a palindrome (71938483917).

The spelling of 11121271806 in words is "eleven billion, one hundred twenty-one million, two hundred seventy-one thousand, eight hundred six".