12122655 has 8 divisors (see below), whose sum is σ = 19396272. Its totient is φ = 6465408.

The previous prime is 12122651. The next prime is 12122657. The reversal of 12122655 is 55622121.

It is a happy number.

12122655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12122655 - 2² = 12122651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404074 + ... + 404103.

It is an arithmetic number, because the mean of its divisors is an integer number (2424534).

Almost surely, 2^12122655 is an apocalyptic number.

12122655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12122655 is a deficient number, since it is larger than the sum of its proper divisors (7273617).

12122655 is an equidigital number, since it uses as much as digits as its factorization.

12122655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808185.

The product of its digits is 1200, while the sum is 24.

The square root of 12122655 is about 3481.7603306374. The cubic root of 12122655 is about 229.7202332450.

Adding to 12122655 its reverse (55622121), we get a palindrome (67744776).

The spelling of 12122655 in words is "twelve million, one hundred twenty-two thousand, six hundred fifty-five".