12098861 has 2 divisors, whose sum is σ = 12098862. Its totient is φ = 12098860.

The previous prime is 12098857. The next prime is 12098903. The reversal of 12098861 is 16889021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 1142761 = 3310^2 + 1069^2 .

It is an emirp because it is prime and its reverse (16889021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12098861 - 2² = 12098857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12098831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6049430 + 6049431.

It is an arithmetic number, because the mean of its divisors is an integer number (6049431).

Almost surely, 2^12098861 is an apocalyptic number.

It is an amenable number.

12098861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12098861 is an equidigital number, since it uses as much as digits as its factorization.

12098861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12098861 is about 3478.3417025933. The cubic root of 12098861 is about 229.5698387074.

The spelling of 12098861 in words is "twelve million, ninety-eight thousand, eight hundred sixty-one".