2012221102189 has 2 divisors, whose sum is σ = 2012221102190. Its totient is φ = 2012221102188.

The previous prime is 2012221102187. The next prime is 2012221102231. The reversal of 2012221102189 is 9812011222102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1476042755625 + 536178346564 = 1214925^2 + 732242^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012221102189 - 2¹ = 2012221102187 is a prime.

Together with 2012221102187, 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 2012221102189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012221102187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006110551094 + 1006110551095.

It is an arithmetic number, because the mean of its divisors is an integer number (1006110551095).

Almost surely, 2^{2012221102189} is an apocalyptic number.

It is an amenable number.

2012221102189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012221102189 is an equidigital number, since it uses as much as digits as its factorization.

2012221102189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 2012221102189 in words is "two trillion, twelve billion, two hundred twenty-one million, one hundred two thousand, one hundred eighty-nine".