21110102010187 has 2 divisors, whose sum is σ = 21110102010188. Its totient is φ = 21110102010186.

The previous prime is 21110102010167. The next prime is 21110102010229. The reversal of 21110102010187 is 78101020101112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110102010187 - 2¹⁹ = 21110101485899 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110102010167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555051005093 + 10555051005094.

It is an arithmetic number, because the mean of its divisors is an integer number (10555051005094).

Almost surely, 2^{21110102010187} is an apocalyptic number.

21110102010187 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110102010187 is an equidigital number, since it uses as much as digits as its factorization.

21110102010187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 25.

Adding to 21110102010187 its reverse (78101020101112), we get a palindrome (99211122111299).

The spelling of 21110102010187 in words is "twenty-one trillion, one hundred ten billion, one hundred two million, ten thousand, one hundred eighty-seven".