12100021189 has 2 divisors, whose sum is σ = 12100021190. Its totient is φ = 12100021188.

The previous prime is 12100021111. The next prime is 12100021223. The reversal of 12100021189 is 98112000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11915468964 + 184552225 = 109158^2 + 13585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100021189 - 2¹³ = 12100012997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100721189) 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, 6050010594 + 6050010595.

It is an arithmetic number, because the mean of its divisors is an integer number (6050010595).

Almost surely, 2^12100021189 is an apocalyptic number.

It is an amenable number.

12100021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100021189 is an equidigital number, since it uses as much as digits as its factorization.

12100021189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 12100021189 in words is "twelve billion, one hundred million, twenty-one thousand, one hundred eighty-nine".