2021000109 has 8 divisors (see below), whose sum is σ = 2731580352. Its totient is φ = 1328876640.

The previous prime is 2021000083. The next prime is 2021000119. The reversal of 2021000109 is 9010001202.

It is a happy number.

2021000109 is digitally balanced in base 4, 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 2021000109 - 2⁸ = 2020999853 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021000119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4613937 + ... + 4614374.

It is an arithmetic number, because the mean of its divisors is an integer number (341447544).

Almost surely, 2^2021000109 is an apocalyptic number.

It is an amenable number.

2021000109 is a deficient number, since it is larger than the sum of its proper divisors (710580243).

2021000109 is an equidigital number, since it uses as much as digits as its factorization.

2021000109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9228387.

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

The square root of 2021000109 is about 44955.5347982871. The cubic root of 2021000109 is about 1264.3154516728.

The spelling of 2021000109 in words is "two billion, twenty-one million, one hundred nine", and thus it is an aban number.