21534103330 has 32 divisors (see below), whose sum is σ = 39327586560. Its totient is φ = 8487944640.

The previous prime is 21534103319. The next prime is 21534103351. The reversal of 21534103330 is 3330143512.

It is a junction number, because it is equal to n+sod(n) for n = 21534103295 and 21534103304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1604307 + ... + 1617673.

It is an arithmetic number, because the mean of its divisors is an integer number (1228987080).

Almost surely, 2^21534103330 is an apocalyptic number.

21534103330 is a deficient number, since it is larger than the sum of its proper divisors (17793483230).

21534103330 is a wasteful number, since it uses less digits than its factorization.

21534103330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 21534103330 its reverse (3330143512), we get a palindrome (24864246842).

The spelling of 21534103330 in words is "twenty-one billion, five hundred thirty-four million, one hundred three thousand, three hundred thirty".