21111010200211 has 2 divisors, whose sum is σ = 21111010200212. Its totient is φ = 21111010200210.

The previous prime is 21111010200197. The next prime is 21111010200239. The reversal of 21111010200211 is 11200201011112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21111010200211 - 2⁵ = 21111010200179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111010200191 and 21111010200200.

It is not a weakly prime, because it can be changed into another prime (21111010200811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555505100105 + 10555505100106.

It is an arithmetic number, because the mean of its divisors is an integer number (10555505100106).

Almost surely, 2^{21111010200211} is an apocalyptic number.

21111010200211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111010200211 is an equidigital number, since it uses as much as digits as its factorization.

21111010200211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21111010200211 its reverse (11200201011112), we get a palindrome (32311211211323).

The spelling of 21111010200211 in words is "twenty-one trillion, one hundred eleven billion, ten million, two hundred thousand, two hundred eleven".