103444221 has 4 divisors (see below), whose sum is σ = 137925632. Its totient is φ = 68962812.

The previous prime is 103444207. The next prime is 103444261. The reversal of 103444221 is 122444301.

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.

It is not a de Polignac number, because 103444221 - 2⁷ = 103444093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103444261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17240701 + ... + 17240706.

It is an arithmetic number, because the mean of its divisors is an integer number (34481408).

Almost surely, 2^103444221 is an apocalyptic number.

It is an amenable number.

103444221 is a deficient number, since it is larger than the sum of its proper divisors (34481411).

103444221 is an equidigital number, since it uses as much as digits as its factorization.

103444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34481410.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 103444221 is about 10170.7532169451. The cubic root of 103444221 is about 469.4277341619.

Adding to 103444221 its reverse (122444301), we get a palindrome (225888522).

The spelling of 103444221 in words is "one hundred three million, four hundred forty-four thousand, two hundred twenty-one".