103221225 has 36 divisors (see below), whose sum is σ = 185916796. Its totient is φ = 54743040.

The previous prime is 103221203. The next prime is 103221233. The reversal of 103221225 is 522122301.

It can be written as a sum of positive squares in 6 ways, for example, as 10830681 + 92390544 = 3291^2 + 9612^2 .

It is not a de Polignac number, because 103221225 - 2⁵ = 103221193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103221198 and 103221207.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42237 + ... + 44613.

Almost surely, 2^103221225 is an apocalyptic number.

103221225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103221225 is a deficient number, since it is larger than the sum of its proper divisors (82695571).

103221225 is a wasteful number, since it uses less digits than its factorization.

103221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 103221225 is about 10159.7846926005. The cubic root of 103221225 is about 469.0901744072.

Adding to 103221225 its reverse (522122301), we get a palindrome (625343526).

The spelling of 103221225 in words is "one hundred three million, two hundred twenty-one thousand, two hundred twenty-five".