221411227 has 2 divisors, whose sum is σ = 221411228. Its totient is φ = 221411226.

The previous prime is 221411221. The next prime is 221411231. The reversal of 221411227 is 722114122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221411227 - 2¹¹ = 221409179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221411198 and 221411207.

It is not a weakly prime, because it can be changed into another prime (221411221) 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, 110705613 + 110705614.

It is an arithmetic number, because the mean of its divisors is an integer number (110705614).

Almost surely, 2^221411227 is an apocalyptic number.

221411227 is a deficient number, since it is larger than the sum of its proper divisors (1).

221411227 is an equidigital number, since it uses as much as digits as its factorization.

221411227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 22.

The square root of 221411227 is about 14879.8933799944. The cubic root of 221411227 is about 604.9691280379.

Adding to 221411227 its reverse (722114122), we get a palindrome (943525349).

The spelling of 221411227 in words is "two hundred twenty-one million, four hundred eleven thousand, two hundred twenty-seven".