12545121 has 16 divisors (see below), whose sum is σ = 17346560. Its totient is φ = 8058960.

The previous prime is 12545089. The next prime is 12545129. The reversal of 12545121 is 12154521.

It is not a de Polignac number, because 12545121 - 2⁵ = 12545089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12545129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9576 + ... + 10806.

It is an arithmetic number, because the mean of its divisors is an integer number (1084160).

Almost surely, 2^12545121 is an apocalyptic number.

It is an amenable number.

12545121 is a deficient number, since it is larger than the sum of its proper divisors (4801439).

12545121 is a wasteful number, since it uses less digits than its factorization.

12545121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its digits is 400, while the sum is 21.

The square root of 12545121 is about 3541.9092309092. The cubic root of 12545121 is about 232.3583505318.

Adding to 12545121 its reverse (12154521), we get a palindrome (24699642).

The spelling of 12545121 in words is "twelve million, five hundred forty-five thousand, one hundred twenty-one".