103123221 has 4 divisors (see below), whose sum is σ = 137497632. Its totient is φ = 68748812.

The previous prime is 103123211. The next prime is 103123243. The reversal of 103123221 is 122321301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122321301 = 3 ⋅40773767.

It is a cyclic number.

It is not a de Polignac number, because 103123221 - 2¹⁰ = 103122197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103123201) 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 3 ways as a sum of consecutive naturals, for example, 17187201 + ... + 17187206.

It is an arithmetic number, because the mean of its divisors is an integer number (34374408).

Almost surely, 2^103123221 is an apocalyptic number.

It is an amenable number.

103123221 is a deficient number, since it is larger than the sum of its proper divisors (34374411).

103123221 is an equidigital number, since it uses as much as digits as its factorization.

103123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34374410.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 103123221 is about 10154.9604135122. The cubic root of 103123221 is about 468.9416672540.

Adding to 103123221 its reverse (122321301), we get a palindrome (225444522).

The spelling of 103123221 in words is "one hundred three million, one hundred twenty-three thousand, two hundred twenty-one".