11225121 has 4 divisors (see below), whose sum is σ = 14966832. Its totient is φ = 7483412.

The previous prime is 11225099. The next prime is 11225129. The reversal of 11225121 is 12152211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11225121 - 2⁵ = 11225089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11225121.

It is not an unprimeable number, because it can be changed into a prime (11225129) 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, 1870851 + ... + 1870856.

It is an arithmetic number, because the mean of its divisors is an integer number (3741708).

Almost surely, 2^11225121 is an apocalyptic number.

It is an amenable number.

11225121 is a deficient number, since it is larger than the sum of its proper divisors (3741711).

11225121 is an equidigital number, since it uses as much as digits as its factorization.

11225121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741710.

The product of its digits is 40, while the sum is 15.

The square root of 11225121 is about 3350.3911711918. The cubic root of 11225121 is about 223.9049407984.

Adding to 11225121 its reverse (12152211), we get a palindrome (23377332).

The spelling of 11225121 in words is "eleven million, two hundred twenty-five thousand, one hundred twenty-one".