227121 has 4 divisors (see below), whose sum is σ = 302832. Its totient is φ = 151412.

The previous prime is 227113. The next prime is 227131. The reversal of 227121 is 121722.

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 227121 - 2³ = 227113 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 227121.

It is not an unprimeable number, because it can be changed into a prime (227111) 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, 37851 + ... + 37856.

It is an arithmetic number, because the mean of its divisors is an integer number (75708).

2²²⁷¹²¹ is an apocalyptic number.

It is an amenable number.

227121 is a deficient number, since it is larger than the sum of its proper divisors (75711).

227121 is an equidigital number, since it uses as much as digits as its factorization.

227121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75710.

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

The square root of 227121 is about 476.5721351485. The cubic root of 227121 is about 61.0125388539.

Adding to 227121 its reverse (121722), we get a palindrome (348843).

The spelling of 227121 in words is "two hundred twenty-seven thousand, one hundred twenty-one", and thus it is an iban number.