21210110100003 has 32 divisors (see below), whose sum is σ = 31696565778432. Its totient is φ = 12502578182400.

The previous prime is 21210110100001. The next prime is 21210110100043. The reversal of 21210110100003 is 30000101101212.

It is not a de Polignac number, because 21210110100003 - 2¹ = 21210110100001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210110100001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111118 + ... + 6514028.

It is an arithmetic number, because the mean of its divisors is an integer number (990517680576).

Almost surely, 2^{21210110100003} is an apocalyptic number.

21210110100003 is a deficient number, since it is larger than the sum of its proper divisors (10486455678429).

21210110100003 is a wasteful number, since it uses less digits than its factorization.

21210110100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405675.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21210110100003 its reverse (30000101101212), we get a palindrome (51210211201215).

The spelling of 21210110100003 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, one hundred thousand, three".