21103212200003 has 16 divisors (see below), whose sum is σ = 21645871228800. Its totient is φ = 20561897118720.

The previous prime is 21103212199961. The next prime is 21103212200029. The reversal of 21103212200003 is 30000221230112.

It is a cyclic number.

It is not a de Polignac number, because 21103212200003 - 2¹⁴ = 21103212183619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103212200033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131508125 + ... + 131668497.

It is an arithmetic number, because the mean of its divisors is an integer number (1352866951800).

Almost surely, 2^{21103212200003} is an apocalyptic number.

21103212200003 is a deficient number, since it is larger than the sum of its proper divisors (542659028797).

21103212200003 is a wasteful number, since it uses less digits than its factorization.

21103212200003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164542.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103212200003 its reverse (30000221230112), we get a palindrome (51103433430115).

The spelling of 21103212200003 in words is "twenty-one trillion, one hundred three billion, two hundred twelve million, two hundred thousand, three".