227127221 has 2 divisors, whose sum is σ = 227127222. Its totient is φ = 227127220.

The previous prime is 227127211. The next prime is 227127227. The reversal of 227127221 is 122721722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190826596 + 36300625 = 13814^2 + 6025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227127221 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227127227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113563610 + 113563611.

It is an arithmetic number, because the mean of its divisors is an integer number (113563611).

Almost surely, 2^227127221 is an apocalyptic number.

It is an amenable number.

227127221 is a deficient number, since it is larger than the sum of its proper divisors (1).

227127221 is an equidigital number, since it uses as much as digits as its factorization.

227127221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 26.

The square root of 227127221 is about 15070.7405591099. The cubic root of 227127221 is about 610.1309590726.

Adding to 227127221 its reverse (122721722), we get a palindrome (349848943).

It can be divided in two parts, 2271 and 27221, that added together give a palindrome (29492).

The spelling of 227127221 in words is "two hundred twenty-seven million, one hundred twenty-seven thousand, two hundred twenty-one".