12121366 has 8 divisors (see below), whose sum is σ = 18224424. Its totient is φ = 6046560.

The previous prime is 12121337. The next prime is 12121367. The reversal of 12121366 is 66312121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121367) 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 in 3 ways as a sum of consecutive naturals, for example, 5955 + ... + 7726.

It is an arithmetic number, because the mean of its divisors is an integer number (2278053).

Almost surely, 2^12121366 is an apocalyptic number.

12121366 is a deficient number, since it is larger than the sum of its proper divisors (6103058).

12121366 is a wasteful number, since it uses less digits than its factorization.

12121366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126.

The product of its digits is 432, while the sum is 22.

The square root of 12121366 is about 3481.5752182022. The cubic root of 12121366 is about 229.7120909177.

Adding to 12121366 its reverse (66312121), we get a palindrome (78433487).

The spelling of 12121366 in words is "twelve million, one hundred twenty-one thousand, three hundred sixty-six".