103221305 has 16 divisors (see below), whose sum is σ = 138780864. Its totient is φ = 73039680.

The previous prime is 103221301. The next prime is 103221311. The reversal of 103221305 is 503122301.

It is not a de Polignac number, because 103221305 - 2² = 103221301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103221301) 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 in 15 ways as a sum of consecutive naturals, for example, 23327 + ... + 27396.

It is an arithmetic number, because the mean of its divisors is an integer number (8673804).

Almost surely, 2^103221305 is an apocalyptic number.

It is an amenable number.

103221305 is a deficient number, since it is larger than the sum of its proper divisors (35559559).

103221305 is a wasteful number, since it uses less digits than its factorization.

103221305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50776.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 103221305 is about 10159.7886296911. The cubic root of 103221305 is about 469.0902955942.

Adding to 103221305 its reverse (503122301), we get a palindrome (606343606).

The spelling of 103221305 in words is "one hundred three million, two hundred twenty-one thousand, three hundred five".