221040359 has 2 divisors, whose sum is σ = 221040360. Its totient is φ = 221040358.

The previous prime is 221040353. The next prime is 221040397. The reversal of 221040359 is 953040122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221040359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221040353) 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, 110520179 + 110520180.

It is an arithmetic number, because the mean of its divisors is an integer number (110520180).

Almost surely, 2^221040359 is an apocalyptic number.

221040359 is a deficient number, since it is larger than the sum of its proper divisors (1).

221040359 is an equidigital number, since it uses as much as digits as its factorization.

221040359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 221040359 is about 14867.4261054158. The cubic root of 221040359 is about 604.6311610169.

The spelling of 221040359 in words is "two hundred twenty-one million, forty thousand, three hundred fifty-nine".