103105221 has 8 divisors (see below), whose sum is σ = 145560384. Its totient is φ = 64693440.

The previous prime is 103105207. The next prime is 103105231. The reversal of 103105221 is 122501301.

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

It is not a de Polignac number, because 103105221 - 2⁶ = 103105157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103105221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103105231) 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 7 ways as a sum of consecutive naturals, for example, 1010785 + ... + 1010886.

It is an arithmetic number, because the mean of its divisors is an integer number (18195048).

Almost surely, 2^103105221 is an apocalyptic number.

It is an amenable number.

103105221 is a deficient number, since it is larger than the sum of its proper divisors (42455163).

103105221 is a wasteful number, since it uses less digits than its factorization.

103105221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021691.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 103105221 is about 10154.0741084552. The cubic root of 103105221 is about 468.9143813169.

Adding to 103105221 its reverse (122501301), we get a palindrome (225606522).

The spelling of 103105221 in words is "one hundred three million, one hundred five thousand, two hundred twenty-one".