21330103221330 has 128 divisors (see below), whose sum is σ = 52351311108096. Its totient is φ = 5561134924800.

The previous prime is 21330103221269. The next prime is 21330103221367. The reversal of 21330103221330 is 3312230103312.

It is a self number, because there is not a number n which added to its sum of digits gives 21330103221330.

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 63 ways as a sum of consecutive naturals, for example, 74019225 + ... + 74306835.

It is an arithmetic number, because the mean of its divisors is an integer number (408994618032).

Almost surely, 2^{21330103221330} is an apocalyptic number.

21330103221330 is an abundant number, since it is smaller than the sum of its proper divisors (31021207886766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21330103221330 is a wasteful number, since it uses less digits than its factorization.

21330103221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288032.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21330103221330 its reverse (3312230103312), we get a palindrome (24642333324642).

The spelling of 21330103221330 in words is "twenty-one trillion, three hundred thirty billion, one hundred three million, two hundred twenty-one thousand, three hundred thirty".