27020121 has 4 divisors (see below), whose sum is σ = 36026832. Its totient is φ = 18013412.

The previous prime is 27020113. The next prime is 27020137. The reversal of 27020121 is 12102072.

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 27020121 - 2³ = 27020113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27020121.

It is not an unprimeable number, because it can be changed into a prime (27020111) 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 3 ways as a sum of consecutive naturals, for example, 4503351 + ... + 4503356.

It is an arithmetic number, because the mean of its divisors is an integer number (9006708).

Almost surely, 2^27020121 is an apocalyptic number.

It is an amenable number.

27020121 is a deficient number, since it is larger than the sum of its proper divisors (9006711).

27020121 is an equidigital number, since it uses as much as digits as its factorization.

27020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9006710.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 27020121 is about 5198.0882062543. The cubic root of 27020121 is about 300.0745037180.

Adding to 27020121 its reverse (12102072), we get a palindrome (39122193).

The spelling of 27020121 in words is "twenty-seven million, twenty thousand, one hundred twenty-one".