21301312100009 has 16 divisors (see below), whose sum is σ = 21913151420160. Its totient is φ = 20694990834000.

The previous prime is 21301312099973. The next prime is 21301312100039. The reversal of 21301312100009 is 90000121310312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301312100009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301312100039) 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, 6640694 + ... + 9311360.

It is an arithmetic number, because the mean of its divisors is an integer number (1369571963760).

Almost surely, 2^{21301312100009} is an apocalyptic number.

It is an amenable number.

21301312100009 is a deficient number, since it is larger than the sum of its proper divisors (611839320151).

21301312100009 is a wasteful number, since it uses less digits than its factorization.

21301312100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671700.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21301312100009 in words is "twenty-one trillion, three hundred one billion, three hundred twelve million, one hundred thousand, nine".