21010321001330 has 16 divisors (see below), whose sum is σ = 38698079612544. Its totient is φ = 8208683553840.

The previous prime is 21010321001323. The next prime is 21010321001359. The reversal of 21010321001330 is 3310012301012.

It is a junction number, because it is equal to n+sod(n) for n = 21010321001299 and 21010321001308.

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, 24430605386 + ... + 24430606245.

It is an arithmetic number, because the mean of its divisors is an integer number (2418629975784).

Almost surely, 2^{21010321001330} is an apocalyptic number.

21010321001330 is a deficient number, since it is larger than the sum of its proper divisors (17687758611214).

21010321001330 is a wasteful number, since it uses less digits than its factorization.

21010321001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48861211681.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21010321001330 its reverse (3310012301012), we get a palindrome (24320333302342).

The spelling of 21010321001330 in words is "twenty-one trillion, ten billion, three hundred twenty-one million, one thousand, three hundred thirty".