21324402335 has 32 divisors (see below), whose sum is σ = 27114048000. Its totient is φ = 16055266176.

The previous prime is 21324402329. The next prime is 21324402343. The reversal of 21324402335 is 53320442312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21324402335 - 2²² = 21320208031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21324402298 and 21324402307.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10457246 + ... + 10459284.

It is an arithmetic number, because the mean of its divisors is an integer number (847314000).

Almost surely, 2^21324402335 is an apocalyptic number.

21324402335 is a deficient number, since it is larger than the sum of its proper divisors (5789645665).

21324402335 is a wasteful number, since it uses less digits than its factorization.

21324402335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 21324402335 its reverse (53320442312), we get a palindrome (74644844647).

The spelling of 21324402335 in words is "twenty-one billion, three hundred twenty-four million, four hundred two thousand, three hundred thirty-five".