12461021 has 2 divisors, whose sum is σ = 12461022. Its totient is φ = 12461020.

The previous prime is 12461011. The next prime is 12461023. The reversal of 12461021 is 12016421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 121 = 3530^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 12461021 - 2⁶ = 12460957 is a prime.

Together with 12461023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12461023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6230510 + 6230511.

It is an arithmetic number, because the mean of its divisors is an integer number (6230511).

Almost surely, 2^12461021 is an apocalyptic number.

It is an amenable number.

12461021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12461021 is an equidigital number, since it uses as much as digits as its factorization.

12461021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12461021 is about 3530.0171387686. The cubic root of 12461021 is about 231.8379578436.

Adding to 12461021 its reverse (12016421), we get a palindrome (24477442).

The spelling of 12461021 in words is "twelve million, four hundred sixty-one thousand, twenty-one".