12265121 has 4 divisors (see below), whose sum is σ = 13380144. Its totient is φ = 11150100.

The previous prime is 12265117. The next prime is 12265129. The reversal of 12265121 is 12156221.

12265121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12265121 - 2² = 12265117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12265093 and 12265102.

It is not an unprimeable number, because it can be changed into a prime (12265129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557495 + ... + 557516.

It is an arithmetic number, because the mean of its divisors is an integer number (3345036).

Almost surely, 2^12265121 is an apocalyptic number.

12265121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12265121 is a deficient number, since it is larger than the sum of its proper divisors (1115023).

12265121 is a wasteful number, since it uses less digits than its factorization.

12265121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115022.

The product of its digits is 240, while the sum is 20.

The square root of 12265121 is about 3502.1594766658. The cubic root of 12265121 is about 230.6166251368.

Subtracting from 12265121 its reverse (12156221), we obtain a square (108900 = 330²).

The spelling of 12265121 in words is "twelve million, two hundred sixty-five thousand, one hundred twenty-one".