221441147 has 2 divisors, whose sum is σ = 221441148. Its totient is φ = 221441146.

The previous prime is 221441141. The next prime is 221441159. The reversal of 221441147 is 741144122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221441147 - 2⁴ = 221441131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221441141) 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, 110720573 + 110720574.

It is an arithmetic number, because the mean of its divisors is an integer number (110720574).

Almost surely, 2^221441147 is an apocalyptic number.

221441147 is a deficient number, since it is larger than the sum of its proper divisors (1).

221441147 is an equidigital number, since it uses as much as digits as its factorization.

221441147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 26.

The square root of 221441147 is about 14880.8987295795. The cubic root of 221441147 is about 604.9963772749.

Adding to 221441147 its reverse (741144122), we get a palindrome (962585269).

The spelling of 221441147 in words is "two hundred twenty-one million, four hundred forty-one thousand, one hundred forty-seven".