43466680121 has 2 divisors, whose sum is σ = 43466680122. Its totient is φ = 43466680120.

The previous prime is 43466680079. The next prime is 43466680123. The reversal of 43466680121 is 12108666434.

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., 43445566096 + 21114025 = 208436^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 43466680121 - 2¹⁰ = 43466679097 is a prime.

Together with 43466680123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43466680123) 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, 21733340060 + 21733340061.

It is an arithmetic number, because the mean of its divisors is an integer number (21733340061).

Almost surely, 2^43466680121 is an apocalyptic number.

It is an amenable number.

43466680121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43466680121 is an equidigital number, since it uses as much as digits as its factorization.

43466680121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 43466680121 in words is "forty-three billion, four hundred sixty-six million, six hundred eighty thousand, one hundred twenty-one".