12265021 has 2 divisors, whose sum is σ = 12265022. Its totient is φ = 12265020.

The previous prime is 12264983. The next prime is 12265031. The reversal of 12265021 is 12056221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10791225 + 1473796 = 3285^2 + 1214^2 .

It is an emirp because it is prime and its reverse (12056221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12265021 - 2²³ = 3876413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12265021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12265031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132510 + 6132511.

It is an arithmetic number, because the mean of its divisors is an integer number (6132511).

Almost surely, 2^12265021 is an apocalyptic number.

It is an amenable number.

12265021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265021 is an equidigital number, since it uses as much as digits as its factorization.

12265021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12265021 is about 3502.1451997312. The cubic root of 12265021 is about 230.6159983806.

The spelling of 12265021 in words is "twelve million, two hundred sixty-five thousand, twenty-one".