21000002002211 has 2 divisors, whose sum is σ = 21000002002212. Its totient is φ = 21000002002210.

The previous prime is 21000002002207. The next prime is 21000002002219. The reversal of 21000002002211 is 11220020000012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21000002002211 - 2² = 21000002002207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000002002192 and 21000002002201.

It is not a weakly prime, because it can be changed into another prime (21000002002219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500001001105 + 10500001001106.

It is an arithmetic number, because the mean of its divisors is an integer number (10500001001106).

Almost surely, 2^{21000002002211} is an apocalyptic number.

21000002002211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000002002211 is an equidigital number, since it uses as much as digits as its factorization.

21000002002211 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 11.

Adding to 21000002002211 its reverse (11220020000012), we get a palindrome (32220022002223).

The spelling of 21000002002211 in words is "twenty-one trillion, two million, two thousand, two hundred eleven".