103103221 has 4 divisors (see below), whose sum is σ = 111034252. Its totient is φ = 95172192.

The previous prime is 103103219. The next prime is 103103261. The reversal of 103103221 is 122301301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122301301 = 881 ⋅138821.

It can be written as a sum of positive squares in 2 ways, for example, as 42107121 + 60996100 = 6489^2 + 7810^2 .

It is a cyclic number.

It is not a de Polignac number, because 103103221 - 2¹ = 103103219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 7931017 = 103103221 / (1 + 0 + 3 + 1 + 0 + 3 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103103261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965496 + ... + 3965521.

It is an arithmetic number, because the mean of its divisors is an integer number (27758563).

Almost surely, 2^103103221 is an apocalyptic number.

It is an amenable number.

103103221 is a deficient number, since it is larger than the sum of its proper divisors (7931031).

103103221 is an equidigital number, since it uses as much as digits as its factorization.

103103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931030.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 103103221 is about 10153.9756253401. The cubic root of 103103221 is about 468.9113493501.

Adding to 103103221 its reverse (122301301), we get a palindrome (225404522).

It can be divided in two parts, 10310 and 3221, that added together give a palindrome (13531).

The spelling of 103103221 in words is "one hundred three million, one hundred three thousand, two hundred twenty-one".