21200100001027 has 2 divisors, whose sum is σ = 21200100001028. Its totient is φ = 21200100001026.

The previous prime is 21200100000991. The next prime is 21200100001063. The reversal of 21200100001027 is 72010000100212.

It is a balanced prime because it is at equal distance from previous prime (21200100000991) and next prime (21200100001063).

It is a cyclic number.

It is not a de Polignac number, because 21200100001027 - 2⁷ = 21200100000899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21200100001027.

It is not a weakly prime, because it can be changed into another prime (21200100001097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600050000513 + 10600050000514.

It is an arithmetic number, because the mean of its divisors is an integer number (10600050000514).

Almost surely, 2^{21200100001027} is an apocalyptic number.

21200100001027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200100001027 is an equidigital number, since it uses as much as digits as its factorization.

21200100001027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 21200100001027 its reverse (72010000100212), we get a palindrome (93210100101239).

The spelling of 21200100001027 in words is "twenty-one trillion, two hundred billion, one hundred million, one thousand, twenty-seven".