105221305 has 8 divisors (see below), whose sum is σ = 144303552. Its totient is φ = 72151728.

The previous prime is 105221299. The next prime is 105221317. The reversal of 105221305 is 503122501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105221305 is a prime.

It is a super-2 number, since 2×105221305² = 22143046051806050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 1503127 + ... + 1503196.

It is an arithmetic number, because the mean of its divisors is an integer number (18037944).

Almost surely, 2^105221305 is an apocalyptic number.

It is an amenable number.

105221305 is a deficient number, since it is larger than the sum of its proper divisors (39082247).

105221305 is an equidigital number, since it uses as much as digits as its factorization.

105221305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006335.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 105221305 is about 10257.7436602793. The cubic root of 105221305 is about 472.1006096575.

Adding to 105221305 its reverse (503122501), we get a palindrome (608343806).

The spelling of 105221305 in words is "one hundred five million, two hundred twenty-one thousand, three hundred five".