21320333033330 has 16 divisors (see below), whose sum is σ = 38451995538840. Its totient is φ = 8511378529152.

The previous prime is 21320333033317. The next prime is 21320333033381. The reversal of 21320333033330 is 3333033302312.

It can be written as a sum of positive squares in 4 ways, for example, as 13768262934721 + 7552070098609 = 3710561^2 + 2748103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21320333033293 and 21320333033302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094330179 + ... + 2094340358.

Almost surely, 2^{21320333033330} is an apocalyptic number.

21320333033330 is a deficient number, since it is larger than the sum of its proper divisors (17131662505510).

21320333033330 is a wasteful number, since it uses less digits than its factorization.

21320333033330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188671053.

The product of its (nonzero) digits is 26244, while the sum is 29.

Adding to 21320333033330 its reverse (3333033302312), we get a palindrome (24653366335642).

The spelling of 21320333033330 in words is "twenty-one trillion, three hundred twenty billion, three hundred thirty-three million, thirty-three thousand, three hundred thirty".