21103212011330 has 16 divisors (see below), whose sum is σ = 38213241393600. Its totient is φ = 8390738188272.

The previous prime is 21103212011309. The next prime is 21103212011353. The reversal of 21103212011330 is 3311021230112.

It is a happy number.

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, 6318325280 + ... + 6318328619.

It is an arithmetic number, because the mean of its divisors is an integer number (2388327587100).

Almost surely, 2^{21103212011330} is an apocalyptic number.

21103212011330 is a deficient number, since it is larger than the sum of its proper divisors (17110029382270).

21103212011330 is a wasteful number, since it uses less digits than its factorization.

21103212011330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636654073.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21103212011330 its reverse (3311021230112), we get a palindrome (24414233241442).

The spelling of 21103212011330 in words is "twenty-one trillion, one hundred three billion, two hundred twelve million, eleven thousand, three hundred thirty".