10200021009 has 16 divisors (see below), whose sum is σ = 14318035200. Its totient is φ = 6441121296.

The previous prime is 10200021001. The next prime is 10200021017. The reversal of 10200021009 is 90012000201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10200021001) and next prime (10200021017).

It is not a de Polignac number, because 10200021009 - 2³ = 10200021001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10200021001) 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, 576042 + ... + 593484.

It is an arithmetic number, because the mean of its divisors is an integer number (894877200).

Almost surely, 2^10200021009 is an apocalyptic number.

10200021009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10200021009 is a deficient number, since it is larger than the sum of its proper divisors (4118014191).

10200021009 is a wasteful number, since it uses less digits than its factorization.

10200021009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27724.

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

The spelling of 10200021009 in words is "ten billion, two hundred million, twenty-one thousand, nine".