12122855 has 8 divisors (see below), whose sum is σ = 15313200. Its totient is φ = 9187776.

The previous prime is 12122843. The next prime is 12122857. The reversal of 12122855 is 55822121.

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

It is a cyclic number.

It is not a de Polignac number, because 12122855 - 2¹⁰ = 12121831 is a prime.

It is a super-2 number, since 2×12122855² = 293927226702050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122857) 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, 63710 + ... + 63899.

It is an arithmetic number, because the mean of its divisors is an integer number (1914150).

Almost surely, 2^12122855 is an apocalyptic number.

12122855 is a deficient number, since it is larger than the sum of its proper divisors (3190345).

12122855 is a wasteful number, since it uses less digits than its factorization.

12122855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127633.

The product of its digits is 1600, while the sum is 26.

The square root of 12122855 is about 3481.7890516227. The cubic root of 12122855 is about 229.7214965490.

Adding to 12122855 its reverse (55822121), we get a palindrome (67944976).

The spelling of 12122855 in words is "twelve million, one hundred twenty-two thousand, eight hundred fifty-five".