12416021 has 8 divisors (see below), whose sum is σ = 13046400. Its totient is φ = 11793232.

The previous prime is 12416017. The next prime is 12416023. The reversal of 12416021 is 12061421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12416021 - 2² = 12416017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12416023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (1630800).

Almost surely, 2^12416021 is an apocalyptic number.

It is an amenable number.

12416021 is a deficient number, since it is larger than the sum of its proper divisors (630379).

12416021 is a wasteful number, since it uses less digits than its factorization.

12416021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12416021 is about 3523.6374671637. The cubic root of 12416021 is about 231.5585454324.

Adding to 12416021 its reverse (12061421), we get a palindrome (24477442).

The spelling of 12416021 in words is "twelve million, four hundred sixteen thousand, twenty-one".