11421225 has 36 divisors (see below), whose sum is σ = 21355776. Its totient is φ = 5823840.

The previous prime is 11421211. The next prime is 11421233. The reversal of 11421225 is 52212411.

11421225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11421225 - 2⁴ = 11421209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11421198 and 11421207.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 4072 + ... + 6278.

It is an arithmetic number, because the mean of its divisors is an integer number (593216).

Almost surely, 2^11421225 is an apocalyptic number.

11421225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11421225 is a deficient number, since it is larger than the sum of its proper divisors (9934551).

11421225 is a wasteful number, since it uses less digits than its factorization.

11421225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2238 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 11421225 is about 3379.5302928070. The cubic root of 11421225 is about 225.2013013290.

Adding to 11421225 its reverse (52212411), we get a palindrome (63633636).

The spelling of 11421225 in words is "eleven million, four hundred twenty-one thousand, two hundred twenty-five".