21130110321211 has 2 divisors, whose sum is σ = 21130110321212. Its totient is φ = 21130110321210.

The previous prime is 21130110321191. The next prime is 21130110321247. The reversal of 21130110321211 is 11212301103112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21130110321211 - 2¹¹ = 21130110319163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21130110321311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565055160605 + 10565055160606.

It is an arithmetic number, because the mean of its divisors is an integer number (10565055160606).

Almost surely, 2^{21130110321211} is an apocalyptic number.

21130110321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130110321211 is an equidigital number, since it uses as much as digits as its factorization.

21130110321211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21130110321211 its reverse (11212301103112), we get a palindrome (32342411424323).

The spelling of 21130110321211 in words is "twenty-one trillion, one hundred thirty billion, one hundred ten million, three hundred twenty-one thousand, two hundred eleven".