21321100200009 has 8 divisors (see below), whose sum is σ = 28432318543072. Its totient is φ = 14211974328480.

The previous prime is 21321100199941. The next prime is 21321100200097. The reversal of 21321100200009 is 90000200112312.

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

It is not a de Polignac number, because 21321100200009 - 2¹¹ = 21321100197961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321100200409) 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, 523094107 + ... + 523134864.

It is an arithmetic number, because the mean of its divisors is an integer number (3554039817884).

Almost surely, 2^{21321100200009} is an apocalyptic number.

It is an amenable number.

21321100200009 is a deficient number, since it is larger than the sum of its proper divisors (7111218343063).

21321100200009 is a wasteful number, since it uses less digits than its factorization.

21321100200009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046235767.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 21321100200009 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred million, two hundred thousand, nine".