12263921 has 2 divisors, whose sum is σ = 12263922. Its totient is φ = 12263920.

The previous prime is 12263903. The next prime is 12263947. The reversal of 12263921 is 12936221.

It is an a-pointer prime, because the next prime (12263947) can be obtained adding 12263921 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 703921 = 3400^2 + 839^2 .

It is an emirp because it is prime and its reverse (12936221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12263921 is a prime.

It is not a weakly prime, because it can be changed into another prime (12263981) 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, 6131960 + 6131961.

It is an arithmetic number, because the mean of its divisors is an integer number (6131961).

Almost surely, 2^12263921 is an apocalyptic number.

It is an amenable number.

12263921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12263921 is an equidigital number, since it uses as much as digits as its factorization.

12263921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 12263921 is about 3501.9881496087. The cubic root of 12263921 is about 230.6091038365.

The spelling of 12263921 in words is "twelve million, two hundred sixty-three thousand, nine hundred twenty-one".