221441459 has 2 divisors, whose sum is σ = 221441460. Its totient is φ = 221441458.

The previous prime is 221441431. The next prime is 221441461. The reversal of 221441459 is 954144122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221441459 is a prime.

Together with 221441461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221441159) 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, 110720729 + 110720730.

It is an arithmetic number, because the mean of its divisors is an integer number (110720730).

Almost surely, 2^221441459 is an apocalyptic number.

221441459 is a deficient number, since it is larger than the sum of its proper divisors (1).

221441459 is an equidigital number, since it uses as much as digits as its factorization.

221441459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 221441459 is about 14880.9092128136. The cubic root of 221441459 is about 604.9966614118.

The spelling of 221441459 in words is "two hundred twenty-one million, four hundred forty-one thousand, four hundred fifty-nine".