12021221110189 has 2 divisors, whose sum is σ = 12021221110190. Its totient is φ = 12021221110188.

The previous prime is 12021221110187. The next prime is 12021221110207. The reversal of 12021221110189 is 98101112212021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7317744547689 + 4703476562500 = 2705133^2 + 2168750^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021221110189 - 2¹ = 12021221110187 is a prime.

Together with 12021221110187, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12021221110189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021221110187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010610555094 + 6010610555095.

It is an arithmetic number, because the mean of its divisors is an integer number (6010610555095).

Almost surely, 2^{12021221110189} is an apocalyptic number.

It is an amenable number.

12021221110189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021221110189 is an equidigital number, since it uses as much as digits as its factorization.

12021221110189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 31.

The spelling of 12021221110189 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, one hundred eighty-nine".