21112102110271 has 2 divisors, whose sum is σ = 21112102110272. Its totient is φ = 21112102110270.

The previous prime is 21112102110217. The next prime is 21112102110299. The reversal of 21112102110271 is 17201120121112.

Together with previous prime (21112102110217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112102110271 is a prime.

It is a super-2 number, since 2×21112102110271² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112102119271) 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, 10556051055135 + 10556051055136.

It is an arithmetic number, because the mean of its divisors is an integer number (10556051055136).

Almost surely, 2^{21112102110271} is an apocalyptic number.

21112102110271 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112102110271 is an equidigital number, since it uses as much as digits as its factorization.

21112102110271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 21112102110271 its reverse (17201120121112), we get a palindrome (38313222231383).

The spelling of 21112102110271 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, one hundred ten thousand, two hundred seventy-one".