21210100202110 has 32 divisors (see below), whose sum is σ = 39495292472160. Its totient is φ = 8191357732992.

The previous prime is 21210100202087. The next prime is 21210100202113. The reversal of 21210100202110 is 1120200101212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210100202113) 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, 18975712 + ... + 20062348.

It is an arithmetic number, because the mean of its divisors is an integer number (1234227889755).

Almost surely, 2^{21210100202110} is an apocalyptic number.

21210100202110 is a deficient number, since it is larger than the sum of its proper divisors (18285192270050).

21210100202110 is a wasteful number, since it uses less digits than its factorization.

21210100202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153980.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21210100202110 its reverse (1120200101212), we get a palindrome (22330300303322).

The spelling of 21210100202110 in words is "twenty-one trillion, two hundred ten billion, one hundred million, two hundred two thousand, one hundred ten".