221014309 has 8 divisors (see below), whose sum is σ = 225298080. Its totient is φ = 216769296.

The previous prime is 221014303. The next prime is 221014319. The reversal of 221014309 is 903410122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221014309 - 2¹¹ = 221012261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221014309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221014303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (28162260).

Almost surely, 2^221014309 is an apocalyptic number.

It is an amenable number.

221014309 is a deficient number, since it is larger than the sum of its proper divisors (4283771).

221014309 is a wasteful number, since it uses less digits than its factorization.

221014309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19379.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 221014309 is about 14866.5500032792. The cubic root of 221014309 is about 604.6074077973.

The spelling of 221014309 in words is "two hundred twenty-one million, fourteen thousand, three hundred nine".