103403221 has 2 divisors, whose sum is σ = 103403222. Its totient is φ = 103403220.

The previous prime is 103403207. The next prime is 103403233. The reversal of 103403221 is 122304301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63776196 + 39627025 = 7986^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 103403221 - 2¹⁷ = 103272149 is a prime.

It is a super-2 number, since 2×103403221² = 21384452226349682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103403195 and 103403204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103403281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51701610 + 51701611.

It is an arithmetic number, because the mean of its divisors is an integer number (51701611).

Almost surely, 2^103403221 is an apocalyptic number.

It is an amenable number.

103403221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103403221 is an equidigital number, since it uses as much as digits as its factorization.

103403221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 103403221 is about 10168.7374339197. The cubic root of 103403221 is about 469.3657069158.

Adding to 103403221 its reverse (122304301), we get a palindrome (225707522).

The spelling of 103403221 in words is "one hundred three million, four hundred three thousand, two hundred twenty-one".