12412521 has 20 divisors (see below), whose sum is σ = 20229264. Its totient is φ = 7522200.

The previous prime is 12412513. The next prime is 12412523. The reversal of 12412521 is 12521421.

It is not a de Polignac number, because 12412521 - 2³ = 12412513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12412494 and 12412503.

It is not an unprimeable number, because it can be changed into a prime (12412523) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6075 + ... + 7856.

Almost surely, 2^12412521 is an apocalyptic number.

12412521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12412521 is a deficient number, since it is larger than the sum of its proper divisors (7816743).

12412521 is a wasteful number, since it uses less digits than its factorization.

12412521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13954 (or 13945 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 12412521 is about 3523.1407862871. The cubic root of 12412521 is about 231.5367850774.

Adding to 12412521 its reverse (12521421), we get a palindrome (24933942).

Subtracting 12412521 from its reverse (12521421), we obtain a square (108900 = 330²).

The spelling of 12412521 in words is "twelve million, four hundred twelve thousand, five hundred twenty-one".