12124521 has 12 divisors (see below), whose sum is σ = 17775472. Its totient is φ = 7961976.

The previous prime is 12124513. The next prime is 12124529. The reversal of 12124521 is 12542121.

12124521 is a `hidden beast` number, since 1 + 212 + 452 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (12124513) and next prime (12124529).

It is not a de Polignac number, because 12124521 - 2³ = 12124513 is a prime.

It is a super-5 number, since 5×12124521⁵ (a number of 37 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12124494 and 12124503.

It is not an unprimeable number, because it can be changed into a prime (12124529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9451 + ... + 10656.

Almost surely, 2^12124521 is an apocalyptic number.

It is an amenable number.

12124521 is a deficient number, since it is larger than the sum of its proper divisors (5650951).

12124521 is a wasteful number, since it uses less digits than its factorization.

12124521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20180 (or 20177 counting only the distinct ones).

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

The square root of 12124521 is about 3482.0282882251. The cubic root of 12124521 is about 229.7320193310.

Adding to 12124521 its reverse (12542121), we get a palindrome (24666642).

It can be divided in two parts, 121 and 24521, that added together give a palindrome (24642).

The spelling of 12124521 in words is "twelve million, one hundred twenty-four thousand, five hundred twenty-one".