21701022010217 has 8 divisors (see below), whose sum is σ = 24007276590912. Its totient is φ = 19450339829200.

The previous prime is 21701022010147. The next prime is 21701022010223. The reversal of 21701022010217 is 71201022010712.

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 21701022010217 - 2¹⁸ = 21701021748073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21701022010237) 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, 13893099098 + ... + 13893100659.

It is an arithmetic number, because the mean of its divisors is an integer number (3000909573864).

Almost surely, 2^{21701022010217} is an apocalyptic number.

It is an amenable number.

21701022010217 is a deficient number, since it is larger than the sum of its proper divisors (2306254580695).

21701022010217 is a wasteful number, since it uses less digits than its factorization.

21701022010217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27786199839.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 21701022010217 its reverse (71201022010712), we get a palindrome (92902044020929).

The spelling of 21701022010217 in words is "twenty-one trillion, seven hundred one billion, twenty-two million, ten thousand, two hundred seventeen".