27130121 has 4 divisors (see below), whose sum is σ = 27343872. Its totient is φ = 26916372.

The previous prime is 27130091. The next prime is 27130141. The reversal of 27130121 is 12103172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27130121 - 2¹⁰ = 27129097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27130121.

It is not an unprimeable number, because it can be changed into a prime (27130141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106685 + ... + 106938.

It is an arithmetic number, because the mean of its divisors is an integer number (6835968).

Almost surely, 2^27130121 is an apocalyptic number.

It is an amenable number.

27130121 is a deficient number, since it is larger than the sum of its proper divisors (213751).

27130121 is a wasteful number, since it uses less digits than its factorization.

27130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213750.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 27130121 is about 5208.6582725305. The cubic root of 27130121 is about 300.4811575086.

Adding to 27130121 its reverse (12103172), we get a palindrome (39233293).

The spelling of 27130121 in words is "twenty-seven million, one hundred thirty thousand, one hundred twenty-one".