21101002002211 has 2 divisors, whose sum is σ = 21101002002212. Its totient is φ = 21101002002210.

The previous prime is 21101002002187. The next prime is 21101002002293. The reversal of 21101002002211 is 11220020010112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21101002002211 - 2³³ = 21092412067619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21101002002191 and 21101002002200.

It is not a weakly prime, because it can be changed into another prime (21101002009211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550501001105 + 10550501001106.

It is an arithmetic number, because the mean of its divisors is an integer number (10550501001106).

Almost surely, 2^{21101002002211} is an apocalyptic number.

21101002002211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101002002211 is an equidigital number, since it uses as much as digits as its factorization.

21101002002211 is an evil number, because the sum of its binary digits is even.

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

Adding to 21101002002211 its reverse (11220020010112), we get a palindrome (32321022012323).

The spelling of 21101002002211 in words is "twenty-one trillion, one hundred one billion, two million, two thousand, two hundred eleven".