21210002210103 has 32 divisors (see below), whose sum is σ = 32780255337984. Its totient is φ = 11948379144192.

The previous prime is 21210002210069. The next prime is 21210002210119. The reversal of 21210002210103 is 30101220001212.

It is not a de Polignac number, because 21210002210103 - 2⁶ = 21210002210039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210002210303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19734025 + ... + 20781042.

It is an arithmetic number, because the mean of its divisors is an integer number (1024382979312).

Almost surely, 2^{21210002210103} is an apocalyptic number.

21210002210103 is a deficient number, since it is larger than the sum of its proper divisors (11570253127881).

21210002210103 is a wasteful number, since it uses less digits than its factorization.

21210002210103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40515431.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21210002210103 its reverse (30101220001212), we get a palindrome (51311222211315).

The spelling of 21210002210103 in words is "twenty-one trillion, two hundred ten billion, two million, two hundred ten thousand, one hundred three".