12245381 has 2 divisors, whose sum is σ = 12245382. Its totient is φ = 12245380.

The previous prime is 12245371. The next prime is 12245399. The reversal of 12245381 is 18354221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11621281 + 624100 = 3409^2 + 790^2 .

It is an emirp because it is prime and its reverse (18354221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12245381 - 2¹⁰ = 12244357 is a prime.

It is a super-2 number, since 2×12245381² = 299898711670322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12245381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12245351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6122690 + 6122691.

It is an arithmetic number, because the mean of its divisors is an integer number (6122691).

Almost surely, 2^12245381 is an apocalyptic number.

It is an amenable number.

12245381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12245381 is an equidigital number, since it uses as much as digits as its factorization.

12245381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 26.

The square root of 12245381 is about 3499.3400806438. The cubic root of 12245381 is about 230.4928373480.

The spelling of 12245381 in words is "twelve million, two hundred forty-five thousand, three hundred eighty-one".