12102112021189 has 2 divisors, whose sum is σ = 12102112021190. Its totient is φ = 12102112021188.

The previous prime is 12102112021117. The next prime is 12102112021211. The reversal of 12102112021189 is 98112021120121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12035556792900 + 66555228289 = 3469230^2 + 257983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102112021189 is a prime.

It is a super-2 number, since 2×12102112021189² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12102112021189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102112021889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051056010594 + 6051056010595.

It is an arithmetic number, because the mean of its divisors is an integer number (6051056010595).

Almost surely, 2^{12102112021189} is an apocalyptic number.

It is an amenable number.

12102112021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102112021189 is an equidigital number, since it uses as much as digits as its factorization.

12102112021189 is an evil number, because the sum of its binary digits is even.

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

The spelling of 12102112021189 in words is "twelve trillion, one hundred two billion, one hundred twelve million, twenty-one thousand, one hundred eighty-nine".