32121009 has 16 divisors (see below), whose sum is σ = 49228800. Its totient is φ = 20675088.

The previous prime is 32120993. The next prime is 32121029. The reversal of 32121009 is 90012123.

It is a happy number.

It is not a de Polignac number, because 32121009 - 2⁴ = 32120993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32120982 and 32121000.

It is not an unprimeable number, because it can be changed into a prime (32121029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19729 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (3076800).

Almost surely, 2^32121009 is an apocalyptic number.

It is an amenable number.

32121009 is a deficient number, since it is larger than the sum of its proper divisors (17107791).

32121009 is a wasteful number, since it uses less digits than its factorization.

32121009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41061 (or 41055 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 32121009 is about 5667.5399425147. The cubic root of 32121009 is about 317.8798941230.

The spelling of 32121009 in words is "thirty-two million, one hundred twenty-one thousand, nine".