27121105 has 8 divisors (see below), whose sum is σ = 35504064. Its totient is φ = 19724400.

The previous prime is 27121099. The next prime is 27121123. The reversal of 27121105 is 50112172.

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

It is not a de Polignac number, because 27121105 - 2¹⁵ = 27088337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246501 + ... + 246610.

It is an arithmetic number, because the mean of its divisors is an integer number (4438008).

Almost surely, 2^27121105 is an apocalyptic number.

It is an amenable number.

27121105 is a deficient number, since it is larger than the sum of its proper divisors (8382959).

27121105 is a wasteful number, since it uses less digits than its factorization.

27121105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493127.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 27121105 is about 5207.7927186093. The cubic root of 27121105 is about 300.4478680849.

Adding to 27121105 its reverse (50112172), we get a palindrome (77233277).

The spelling of 27121105 in words is "twenty-seven million, one hundred twenty-one thousand, one hundred five".