103507221 has 8 divisors (see below), whose sum is σ = 138602880. Its totient is φ = 68708192.

The previous prime is 103507213. The next prime is 103507223. The reversal of 103507221 is 122705301.

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 103507221 - 2³ = 103507213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103507223) 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, 73341 + ... + 74738.

It is an arithmetic number, because the mean of its divisors is an integer number (17325360).

Almost surely, 2^103507221 is an apocalyptic number.

It is an amenable number.

103507221 is a deficient number, since it is larger than the sum of its proper divisors (35095659).

103507221 is a wasteful number, since it uses less digits than its factorization.

103507221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148315.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 103507221 is about 10173.8498612865. The cubic root of 103507221 is about 469.5230123877.

It can be divided in two parts, 10350 and 7221, that added together give a palindrome (17571).

The spelling of 103507221 in words is "one hundred three million, five hundred seven thousand, two hundred twenty-one".