9009121 has 8 divisors (see below), whose sum is σ = 9857664. Its totient is φ = 8165520.

The previous prime is 9009107. The next prime is 9009157. The reversal of 9009121 is 1219009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9009121 - 2¹⁵ = 8976353 is a prime.

It is a super-2 number, since 2×9009121² = 162328522385282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9009092 and 9009101.

It is not an unprimeable number, because it can be changed into a prime (9009191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (1232208).

Almost surely, 2^9009121 is an apocalyptic number.

It is an amenable number.

9009121 is a deficient number, since it is larger than the sum of its proper divisors (848543).

9009121 is a wasteful number, since it uses less digits than its factorization.

9009121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 9009121 is about 3001.5197817106. The cubic root of 9009121 is about 208.0786268940.

The spelling of 9009121 in words is "nine million, nine thousand, one hundred twenty-one".