12122018 has 8 divisors (see below), whose sum is σ = 18230940. Its totient is φ = 6045040.

The previous prime is 12122009. The next prime is 12122021. The reversal of 12122018 is 81022121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11444689 + 677329 = 3383^2 + 823^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12121987 and 12122005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7013 + ... + 8568.

Almost surely, 2^12122018 is an apocalyptic number.

12122018 is a deficient number, since it is larger than the sum of its proper divisors (6108922).

12122018 is a wasteful number, since it uses less digits than its factorization.

12122018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15972.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12122018 is about 3481.6688527199. The cubic root of 12122018 is about 229.7162095293.

Adding to 12122018 its reverse (81022121), we get a palindrome (93144139).

The spelling of 12122018 in words is "twelve million, one hundred twenty-two thousand, eighteen".