21033242335 has 8 divisors (see below), whose sum is σ = 28845589536. Its totient is φ = 14422794720.

The previous prime is 21033242309. The next prime is 21033242381. The reversal of 21033242335 is 53324233012.

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

It is not a de Polignac number, because 21033242335 - 2⁷ = 21033242207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 300474856 + ... + 300474925.

It is an arithmetic number, because the mean of its divisors is an integer number (3605698692).

Almost surely, 2^21033242335 is an apocalyptic number.

21033242335 is a deficient number, since it is larger than the sum of its proper divisors (7812347201).

21033242335 is an equidigital number, since it uses as much as digits as its factorization.

21033242335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600949793.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 21033242335 its reverse (53324233012), we get a palindrome (74357475347).

The spelling of 21033242335 in words is "twenty-one billion, thirty-three million, two hundred forty-two thousand, three hundred thirty-five".