21110012012189 has 2 divisors, whose sum is σ = 21110012012190. Its totient is φ = 21110012012188.

The previous prime is 21110012012183. The next prime is 21110012012263. The reversal of 21110012012189 is 98121021001112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20759231812900 + 350780199289 = 4556230^2 + 592267^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110012012189 - 2¹² = 21110012008093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110012012183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555006006094 + 10555006006095.

It is an arithmetic number, because the mean of its divisors is an integer number (10555006006095).

Almost surely, 2^{21110012012189} is an apocalyptic number.

It is an amenable number.

21110012012189 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110012012189 is an equidigital number, since it uses as much as digits as its factorization.

21110012012189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 21110012012189 in words is "twenty-one trillion, one hundred ten billion, twelve million, twelve thousand, one hundred eighty-nine".