20002100221009 has 8 divisors (see below), whose sum is σ = 20428854974208. Its totient is φ = 19575394557600.

The previous prime is 20002100220917. The next prime is 20002100221013. The reversal of 20002100221009 is 90012200120002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002100221009 - 2¹³ = 20002100212817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002100221069) 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, 11448252 + ... + 13079245.

It is an arithmetic number, because the mean of its divisors is an integer number (2553606871776).

Almost surely, 2^{20002100221009} is an apocalyptic number.

It is an amenable number.

20002100221009 is a deficient number, since it is larger than the sum of its proper divisors (426754753199).

20002100221009 is a wasteful number, since it uses less digits than its factorization.

20002100221009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24544895.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20002100221009 in words is "twenty trillion, two billion, one hundred million, two hundred twenty-one thousand, nine".