21034020011009 has 8 divisors (see below), whose sum is σ = 21044215057920. Its totient is φ = 21023826321456.

The previous prime is 21034020010981. The next prime is 21034020011033. The reversal of 21034020011009 is 90011002043012.

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 21034020011009 - 2¹² = 21034020006913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21034020014009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31376672 + ... + 32040030.

It is an arithmetic number, because the mean of its divisors is an integer number (2630526882240).

Almost surely, 2^{21034020011009} is an apocalyptic number.

It is an amenable number.

21034020011009 is a deficient number, since it is larger than the sum of its proper divisors (10195046911).

21034020011009 is a wasteful number, since it uses less digits than its factorization.

21034020011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678679.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21034020011009 in words is "twenty-one trillion, thirty-four billion, twenty million, eleven thousand, nine".