9209121 has 16 divisors (see below), whose sum is σ = 13250304. Its totient is φ = 5667584.

The previous prime is 9209117. The next prime is 9209141. The reversal of 9209121 is 1219029.

It is a cyclic number.

It is not a de Polignac number, because 9209121 - 2² = 9209117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9209091 and 9209100.

It is not an unprimeable number, because it can be changed into a prime (9209141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000 + ... + 4406.

It is an arithmetic number, because the mean of its divisors is an integer number (828144).

Almost surely, 2^9209121 is an apocalyptic number.

It is an amenable number.

9209121 is a deficient number, since it is larger than the sum of its proper divisors (4041183).

9209121 is a wasteful number, since it uses less digits than its factorization.

9209121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 9209121 is about 3034.6533574694. The cubic root of 9209121 is about 209.6071339690.

The spelling of 9209121 in words is "nine million, two hundred nine thousand, one hundred twenty-one".