21210100010211 has 64 divisors (see below), whose sum is σ = 34436550758400. Its totient is φ = 11342026705536.

The previous prime is 21210100010179. The next prime is 21210100010219. The reversal of 21210100010211 is 11201000101212.

It is not a de Polignac number, because 21210100010211 - 2⁵ = 21210100010179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210100010219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 224452905 + ... + 224547381.

It is an arithmetic number, because the mean of its divisors is an integer number (538071105600).

Almost surely, 2^{21210100010211} is an apocalyptic number.

21210100010211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21210100010211 is a deficient number, since it is larger than the sum of its proper divisors (13226450748189).

21210100010211 is a wasteful number, since it uses less digits than its factorization.

21210100010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101368.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21210100010211 its reverse (11201000101212), we get a palindrome (32411100111423).

The spelling of 21210100010211 in words is "twenty-one trillion, two hundred ten billion, one hundred million, ten thousand, two hundred eleven".