12246021 has 12 divisors (see below), whose sum is σ = 18023148. Its totient is φ = 8009664.

The previous prime is 12245999. The next prime is 12246029. The reversal of 12246021 is 12064221.

12246021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9641025 + 2604996 = 3105^2 + 1614^2 .

It is not a de Polignac number, because 12246021 - 2¹⁰ = 12244997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12245985 and 12246003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12246029) 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, 12360 + ... + 13313.

It is an arithmetic number, because the mean of its divisors is an integer number (1501929).

Almost surely, 2^12246021 is an apocalyptic number.

It is an amenable number.

12246021 is a deficient number, since it is larger than the sum of its proper divisors (5777127).

12246021 is a wasteful number, since it uses less digits than its factorization.

12246021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25732 (or 25729 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12246021 is about 3499.4315252624. The cubic root of 12246021 is about 230.4968528171.

The spelling of 12246021 in words is "twelve million, two hundred forty-six thousand, twenty-one".