12411021 has 16 divisors (see below), whose sum is σ = 19424384. Its totient is φ = 6899904.

The previous prime is 12411019. The next prime is 12411023. The reversal of 12411021 is 12011421.

It is a happy number.

12411021 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 is an interprime number because it is at equal distance from previous prime (12411019) and next prime (12411023).

It is not a de Polignac number, because 12411021 - 2¹ = 12411019 is a prime.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 12410988 and 12411006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12411023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7210 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (1214024).

Almost surely, 2^12411021 is an apocalyptic number.

It is an amenable number.

12411021 is a deficient number, since it is larger than the sum of its proper divisors (7013363).

12411021 is a wasteful number, since it uses less digits than its factorization.

12411021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 12411021 is about 3522.9279016182. The cubic root of 12411021 is about 231.5274579587.

Adding to 12411021 its reverse (12011421), we get a palindrome (24422442).

The spelling of 12411021 in words is "twelve million, four hundred eleven thousand, twenty-one".