12122017406 has 8 divisors (see below), whose sum is σ = 18186152400. Its totient is φ = 6059966608.

The previous prime is 12122017403. The next prime is 12122017471. The reversal of 12122017406 is 60471022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122017403) 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 in 3 ways as a sum of consecutive naturals, for example, 506426 + ... + 529821.

It is an arithmetic number, because the mean of its divisors is an integer number (2273269050).

Almost surely, 2^12122017406 is an apocalyptic number.

12122017406 is a deficient number, since it is larger than the sum of its proper divisors (6064134994).

12122017406 is a wasteful number, since it uses less digits than its factorization.

12122017406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042098.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 12122017406 its reverse (60471022121), we get a palindrome (72593039527).

The spelling of 12122017406 in words is "twelve billion, one hundred twenty-two million, seventeen thousand, four hundred six".