21001012000211 has 2 divisors, whose sum is σ = 21001012000212. Its totient is φ = 21001012000210.

The previous prime is 21001012000169. The next prime is 21001012000231. The reversal of 21001012000211 is 11200021010012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21001012000211 - 2⁶ = 21001012000147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21001012000192 and 21001012000201.

It is not a weakly prime, because it can be changed into another prime (21001012000231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500506000105 + 10500506000106.

It is an arithmetic number, because the mean of its divisors is an integer number (10500506000106).

Almost surely, 2^{21001012000211} is an apocalyptic number.

21001012000211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001012000211 is an equidigital number, since it uses as much as digits as its factorization.

21001012000211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21001012000211 its reverse (11200021010012), we get a palindrome (32201033010223).

The spelling of 21001012000211 in words is "twenty-one trillion, one billion, twelve million, two hundred eleven", and thus it is an aban number.