21530350213335 has 12 divisors (see below), whose sum is σ = 37319273703192. Its totient is φ = 11482853447088.

The previous prime is 21530350213321. The next prime is 21530350213373. The reversal of 21530350213335 is 53331205303512.

It is a happy number.

21530350213335 is a `hidden beast` number, since 2 + 1 + 5 + 303 + 5 + 0 + 2 + 13 + 335 = 666.

It is not a de Polignac number, because 21530350213335 - 2⁵ = 21530350213303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21530350213335.

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 11 ways as a sum of consecutive naturals, for example, 239226113437 + ... + 239226113526.

It is an arithmetic number, because the mean of its divisors is an integer number (3109939475266).

Almost surely, 2^{21530350213335} is an apocalyptic number.

21530350213335 is a deficient number, since it is larger than the sum of its proper divisors (15788923489857).

21530350213335 is a wasteful number, since it uses less digits than its factorization.

21530350213335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478452226974 (or 478452226971 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 36.

Adding to 21530350213335 its reverse (53331205303512), we get a palindrome (74861555516847).

The spelling of 21530350213335 in words is "twenty-one trillion, five hundred thirty billion, three hundred fifty million, two hundred thirteen thousand, three hundred thirty-five".