12122559 has 6 divisors (see below), whose sum is σ = 17510376. Its totient is φ = 8081700.

The previous prime is 12122557. The next prime is 12122563. The reversal of 12122559 is 95522121.

It is not a de Polignac number, because 12122559 - 2¹ = 12122557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673467 + ... + 673484.

It is an arithmetic number, because the mean of its divisors is an integer number (2918396).

Almost surely, 2^12122559 is an apocalyptic number.

12122559 is a deficient number, since it is larger than the sum of its proper divisors (5387817).

12122559 is a wasteful number, since it uses less digits than its factorization.

12122559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346957 (or 1346954 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12122559 is about 3481.7465444802. The cubic root of 12122559 is about 229.7196268542.

The spelling of 12122559 in words is "twelve million, one hundred twenty-two thousand, five hundred fifty-nine".