221059 has 2 divisors, whose sum is σ = 221060. Its totient is φ = 221058.
The previous prime is 221047. The next prime is 221069. The reversal of 221059 is 950122.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 221059 - 27 = 220931 is a prime.
221059 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (221069) 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 as a sum of consecutive naturals, namely, 110529 + 110530.
It is an arithmetic number, because the mean of its divisors is an integer number (110530).
2221059 is an apocalyptic number.
221059 is a deficient number, since it is larger than the sum of its proper divisors (1).
221059 is an equidigital number, since it uses as much as digits as its factorization.
221059 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 180, while the sum is 19.
The square root of 221059 is about 470.1691185095. The cubic root of 221059 is about 60.4648157329.
It can be divided in two parts, 22 and 1059, that added together give a triangular number (1081 = T46).
The spelling of 221059 in words is "two hundred twenty-one thousand, fifty-nine".
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