21220000002211 has 2 divisors, whose sum is σ = 21220000002212. Its totient is φ = 21220000002210.

The previous prime is 21220000002139. The next prime is 21220000002217. The reversal of 21220000002211 is 11220000002212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220000002211 - 2⁷ = 21220000002083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21220000002191 and 21220000002200.

It is not a weakly prime, because it can be changed into another prime (21220000002217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610000001105 + 10610000001106.

It is an arithmetic number, because the mean of its divisors is an integer number (10610000001106).

Almost surely, 2^{21220000002211} is an apocalyptic number.

21220000002211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220000002211 is an equidigital number, since it uses as much as digits as its factorization.

21220000002211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21220000002211 its reverse (11220000002212), we get a palindrome (32440000004423).

Subtracting from 21220000002211 its reverse (11220000002212), we obtain a palindrome (9999999999999).

The spelling of 21220000002211 in words is "twenty-one trillion, two hundred twenty billion, two thousand, two hundred eleven".