21335806335 has 16 divisors (see below), whose sum is σ = 34139160576. Its totient is φ = 11378473248.

The previous prime is 21335806333. The next prime is 21335806379. The reversal of 21335806335 is 53360853312.

It is not a de Polignac number, because 21335806335 - 2¹ = 21335806333 is a prime.

It is a super-2 number, since 2×21335806335² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21335806293 and 21335806302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335806333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413122 + ... + 461888.

It is an arithmetic number, because the mean of its divisors is an integer number (2133697536).

Almost surely, 2^21335806335 is an apocalyptic number.

21335806335 is a deficient number, since it is larger than the sum of its proper divisors (12803354241).

21335806335 is a wasteful number, since it uses less digits than its factorization.

21335806335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77942.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 21335806335 in words is "twenty-one billion, three hundred thirty-five million, eight hundred six thousand, three hundred thirty-five".