10212009 has 8 divisors (see below), whose sum is σ = 13751232. Its totient is φ = 6740400.

The previous prime is 10211983. The next prime is 10212011. The reversal of 10212009 is 90021201.

It is a happy number.

10212009 is nontrivially palindromic in base 11.

10212009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10212009 - 2⁹ = 10211497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10212029) 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, 16549 + ... + 17154.

It is an arithmetic number, because the mean of its divisors is an integer number (1718904).

Almost surely, 2^10212009 is an apocalyptic number.

It is an amenable number.

10212009 is a deficient number, since it is larger than the sum of its proper divisors (3539223).

10212009 is a wasteful number, since it uses less digits than its factorization.

10212009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33807.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 10212009 is about 3195.6234133577. The cubic root of 10212009 is about 216.9553661023.

The spelling of 10212009 in words is "ten million, two hundred twelve thousand, nine".