9121225 has 24 divisors (see below), whose sum is σ = 12231360. Its totient is φ = 6726720.

The previous prime is 9121213. The next prime is 9121241. The reversal of 9121225 is 5221219.

9121225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9121225 - 2⁵ = 9121193 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9121196 and 9121205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16402 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (509640).

Almost surely, 2^9121225 is an apocalyptic number.

It is an amenable number.

9121225 is a deficient number, since it is larger than the sum of its proper divisors (3110135).

9121225 is a wasteful number, since it uses less digits than its factorization.

9121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 604 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 9121225 is about 3020.1365863153. The cubic root of 9121225 is about 208.9381393960.

It can be divided in two parts, 91 and 21225, that added together give a square (21316 = 146²).

The spelling of 9121225 in words is "nine million, one hundred twenty-one thousand, two hundred twenty-five".