12122605 has 8 divisors (see below), whose sum is σ = 15869664. Its totient is φ = 8816400.

The previous prime is 12122597. The next prime is 12122623. The reversal of 12122605 is 50622121.

12122605 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 12122605 - 2³ = 12122597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110151 + ... + 110260.

It is an arithmetic number, because the mean of its divisors is an integer number (1983708).

Almost surely, 2^12122605 is an apocalyptic number.

It is an amenable number.

12122605 is a deficient number, since it is larger than the sum of its proper divisors (3747059).

12122605 is a wasteful number, since it uses less digits than its factorization.

12122605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220427.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12122605 is about 3481.7531503540. The cubic root of 12122605 is about 229.7199174169.

Adding to 12122605 its reverse (50622121), we get a palindrome (62744726).

The spelling of 12122605 in words is "twelve million, one hundred twenty-two thousand, six hundred five".