20010010012109 has 32 divisors (see below), whose sum is σ = 23620360780800. Its totient is φ = 16775272627200.

The previous prime is 20010010012093. The next prime is 20010010012121. The reversal of 20010010012109 is 90121001001002.

It is a cyclic number.

It is not a de Polignac number, because 20010010012109 - 2⁴ = 20010010012093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010010012009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1793447 + ... + 6575444.

It is an arithmetic number, because the mean of its divisors is an integer number (738136274400).

Almost surely, 2^{20010010012109} is an apocalyptic number.

It is an amenable number.

20010010012109 is a deficient number, since it is larger than the sum of its proper divisors (3610350768691).

20010010012109 is a wasteful number, since it uses less digits than its factorization.

20010010012109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369301.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 20010010012109 in words is "twenty trillion, ten billion, ten million, twelve thousand, one hundred nine".