12446021 has 4 divisors (see below), whose sum is σ = 14224032. Its totient is φ = 10668012.

The previous prime is 12446011. The next prime is 12446029. The reversal of 12446021 is 12064421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12064421 = 179 ⋅67399.

It is a cyclic number.

It is not a de Polignac number, because 12446021 - 2⁶ = 12445957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12445984 and 12446002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446029) 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, 888995 + ... + 889008.

It is an arithmetic number, because the mean of its divisors is an integer number (3556008).

Almost surely, 2^12446021 is an apocalyptic number.

It is an amenable number.

12446021 is a deficient number, since it is larger than the sum of its proper divisors (1778011).

12446021 is an equidigital number, since it uses as much as digits as its factorization.

12446021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778010.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12446021 is about 3527.8918634221. The cubic root of 12446021 is about 231.7448952264.

The spelling of 12446021 in words is "twelve million, four hundred forty-six thousand, twenty-one".