21330321311330 has 64 divisors (see below), whose sum is σ = 40903281642240. Its totient is φ = 7985939060736.

The previous prime is 21330321311317. The next prime is 21330321311347. The reversal of 21330321311330 is 3311312303312.

It is a self number, because there is not a number n which added to its sum of digits gives 21330321311330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5133059 + ... + 8307161.

It is an arithmetic number, because the mean of its divisors is an integer number (639113775660).

Almost surely, 2^{21330321311330} is an apocalyptic number.

21330321311330 is a deficient number, since it is larger than the sum of its proper divisors (19572960330910).

21330321311330 is a wasteful number, since it uses less digits than its factorization.

21330321311330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174555.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21330321311330 its reverse (3311312303312), we get a palindrome (24641633614642).

The spelling of 21330321311330 in words is "twenty-one trillion, three hundred thirty billion, three hundred twenty-one million, three hundred eleven thousand, three hundred thirty".