11021225 has 6 divisors (see below), whose sum is σ = 13666350. Its totient is φ = 8816960.

The previous prime is 11021183. The next prime is 11021249. The reversal of 11021225 is 52212011.

It can be written as a sum of positive squares in 3 ways, for example, as 157609 + 10863616 = 397^2 + 3296^2 .

It is not a de Polignac number, because 11021225 - 2¹⁴ = 11004841 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 220400 + ... + 220449.

It is an arithmetic number, because the mean of its divisors is an integer number (2277725).

Almost surely, 2^11021225 is an apocalyptic number.

It is an amenable number.

11021225 is a deficient number, since it is larger than the sum of its proper divisors (2645125).

11021225 is an equidigital number, since it uses as much as digits as its factorization.

11021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440859 (or 440854 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 11021225 is about 3319.8230374524. The cubic root of 11021225 is about 222.5409595090.

Adding to 11021225 its reverse (52212011), we get a palindrome (63233236).

The spelling of 11021225 in words is "eleven million, twenty-one thousand, two hundred twenty-five".